diff --git a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
index dde12d7..b4d584f 100644
--- a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
@@ -402,9 +402,9 @@
 
 		pi.save()
 		pi.submit()
-		self.assertEqual(pi.payment_schedule[0].payment_amount, 756.15)
+		self.assertEqual(pi.payment_schedule[0].payment_amount, 606.15)
 		self.assertEqual(pi.payment_schedule[0].due_date, pi.posting_date)
-		self.assertEqual(pi.payment_schedule[1].payment_amount, 756.15)
+		self.assertEqual(pi.payment_schedule[1].payment_amount, 606.15)
 		self.assertEqual(pi.payment_schedule[1].due_date, add_days(pi.posting_date, 30))
 
 		pi.load_from_db()
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 155a996..0672b2d 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -787,6 +787,9 @@
 		if self.doctype in ("Sales Invoice", "Purchase Invoice"):
 			grand_total = grand_total - flt(self.write_off_amount)
 
+		if self.get("total_advance"):
+			grand_total -= self.get("total_advance")
+
 		if not self.get("payment_schedule"):
 			if self.get("payment_terms_template"):
 				data = get_payment_terms(self.payment_terms_template, posting_date, grand_total)
@@ -832,6 +835,9 @@
 			total = flt(total, self.precision("grand_total"))
 
 			grand_total = flt(self.get("rounded_total") or self.grand_total, self.precision('grand_total'))
+			if self.get("total_advance"):
+				grand_total -= self.get("total_advance")
+
 			if self.doctype in ("Sales Invoice", "Purchase Invoice"):
 				grand_total = grand_total - flt(self.write_off_amount)
 			if total != grand_total:
diff --git a/erpnext/education/doctype/education_settings/education_settings.json b/erpnext/education/doctype/education_settings/education_settings.json
index 3be4988..32b5fb8 100644
--- a/erpnext/education/doctype/education_settings/education_settings.json
+++ b/erpnext/education/doctype/education_settings/education_settings.json
@@ -1,492 +1,136 @@
 {
- "allow_copy": 0,
- "allow_events_in_timeline": 0,
- "allow_guest_to_view": 0,
- "allow_import": 0,
- "allow_rename": 0,
- "beta": 0,
  "creation": "2017-04-05 13:33:04.519313",
- "custom": 0,
- "docstatus": 0,
  "doctype": "DocType",
- "document_type": "",
  "editable_grid": 1,
  "engine": "InnoDB",
+ "field_order": [
+  "current_academic_year",
+  "current_academic_term",
+  "attendance_freeze_date",
+  "column_break_4",
+  "validate_batch",
+  "validate_course",
+  "academic_term_reqd",
+  "section_break_7",
+  "instructor_created_by",
+  "web_academy_settings_section",
+  "enable_lms",
+  "portal_title",
+  "description"
+ ],
  "fields": [
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "current_academic_year",
    "fieldtype": "Link",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
    "label": "Current Academic Year",
-   "length": 0,
-   "no_copy": 0,
-   "options": "Academic Year",
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "options": "Academic Year"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "current_academic_term",
    "fieldtype": "Link",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
    "label": "Current Academic Term",
-   "length": 0,
-   "no_copy": 0,
-   "options": "Academic Term",
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "options": "Academic Term"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "attendance_freeze_date",
    "fieldtype": "Date",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Attendance Freeze Date",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "Attendance Freeze Date"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "column_break_4",
-   "fieldtype": "Column Break",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "fieldtype": "Column Break"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "description": "For Batch based Student Group, the Student Batch will be validated for every Student from the Program Enrollment.",
    "fieldname": "validate_batch",
    "fieldtype": "Check",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Validate Batch for Students in Student Group",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "Validate Batch for Students in Student Group"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "description": "For Course based Student Group, the Course will be validated for every Student from the enrolled Courses in Program Enrollment.",
    "fieldname": "validate_course",
    "fieldtype": "Check",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Validate Enrolled Course for Students in Student Group",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "Validate Enrolled Course for Students in Student Group"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "default": "0",
    "description": "If enabled, field Academic Term will be Mandatory in Program Enrollment Tool.",
    "fieldname": "academic_term_reqd",
    "fieldtype": "Check",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Make Academic Term Mandatory",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "Make Academic Term Mandatory"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "section_break_7",
-   "fieldtype": "Section Break",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "fieldtype": "Section Break"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "default": "Full Name",
    "fieldname": "instructor_created_by",
    "fieldtype": "Select",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
    "label": "Instructor Records to be created by",
-   "length": 0,
-   "no_copy": 0,
-   "options": "Full Name\nNaming Series\nEmployee Number",
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "options": "Full Name\nNaming Series\nEmployee Number"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
    "fieldname": "web_academy_settings_section",
    "fieldtype": "Section Break",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "LMS Settings",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "LMS Settings"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
+   "depends_on": "eval: doc.enable_lms",
    "fieldname": "portal_title",
    "fieldtype": "Data",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Portal Title",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "LMS Title"
   },
   {
-   "allow_bulk_edit": 0,
-   "allow_in_quick_entry": 0,
-   "allow_on_submit": 0,
-   "bold": 0,
-   "collapsible": 0,
-   "columns": 0,
+   "depends_on": "eval: doc.enable_lms",
    "fieldname": "description",
    "fieldtype": "Small Text",
-   "hidden": 0,
-   "ignore_user_permissions": 0,
-   "ignore_xss_filter": 0,
-   "in_filter": 0,
-   "in_global_search": 0,
-   "in_list_view": 0,
-   "in_standard_filter": 0,
-   "label": "Description",
-   "length": 0,
-   "no_copy": 0,
-   "permlevel": 0,
-   "precision": "",
-   "print_hide": 0,
-   "print_hide_if_no_value": 0,
-   "read_only": 0,
-   "remember_last_selected_value": 0,
-   "report_hide": 0,
-   "reqd": 0,
-   "search_index": 0,
-   "set_only_once": 0,
-   "translatable": 0,
-   "unique": 0
+   "label": "Description"
+  },
+  {
+   "fieldname": "enable_lms",
+   "fieldtype": "Check",
+   "label": "Enable LMS"
   }
  ],
- "has_web_view": 0,
- "hide_heading": 0,
- "hide_toolbar": 0,
- "idx": 0,
- "image_view": 0,
- "in_create": 0,
- "is_submittable": 0,
  "issingle": 1,
- "istable": 0,
- "max_attachments": 0,
- "modified": "2018-12-11 15:49:15.045116",
+ "modified": "2019-05-13 18:36:13.127563",
  "modified_by": "Administrator",
  "module": "Education",
  "name": "Education Settings",
- "name_case": "",
  "owner": "Administrator",
  "permissions": [
   {
-   "amend": 0,
-   "cancel": 0,
    "create": 1,
    "delete": 1,
    "email": 1,
-   "export": 0,
-   "if_owner": 0,
-   "import": 0,
-   "permlevel": 0,
    "print": 1,
    "read": 1,
-   "report": 0,
    "role": "System Manager",
-   "set_user_permissions": 0,
    "share": 1,
-   "submit": 0,
    "write": 1
   },
   {
-   "amend": 0,
-   "cancel": 0,
    "create": 1,
    "delete": 1,
    "email": 1,
-   "export": 0,
-   "if_owner": 0,
-   "import": 0,
-   "permlevel": 0,
    "print": 1,
    "read": 1,
-   "report": 0,
    "role": "Education Manager",
-   "set_user_permissions": 0,
    "share": 1,
-   "submit": 0,
    "write": 1
   },
   {
-   "amend": 0,
-   "cancel": 0,
-   "create": 0,
-   "delete": 0,
    "email": 1,
-   "export": 0,
-   "if_owner": 0,
-   "import": 0,
-   "permlevel": 0,
    "print": 1,
    "read": 1,
-   "report": 0,
    "role": "Guest",
-   "set_user_permissions": 0,
-   "share": 1,
-   "submit": 0,
-   "write": 0
+   "share": 1
   }
  ],
  "quick_entry": 1,
- "read_only": 0,
- "read_only_onload": 0,
  "restrict_to_domain": "Education",
- "show_name_in_global_search": 0,
  "sort_field": "modified",
  "sort_order": "DESC",
- "track_changes": 1,
- "track_seen": 0,
- "track_views": 0
+ "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/education/doctype/education_settings/education_settings.py b/erpnext/education/doctype/education_settings/education_settings.py
index 9286efa..a85d3e7 100644
--- a/erpnext/education/doctype/education_settings/education_settings.py
+++ b/erpnext/education/doctype/education_settings/education_settings.py
@@ -34,3 +34,6 @@
 			make_property_setter('Instructor', "naming_series", "hidden", 0, "Check")
 		else:
 			make_property_setter('Instructor', "naming_series", "hidden", 1, "Check")
+
+def update_website_context(context):
+	context["lms_enabled"] = frappe.get_doc("Education Settings").enable_lms
\ No newline at end of file
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index 8ae9267..53da013 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -50,7 +50,7 @@
 treeviews = ['Account', 'Cost Center', 'Warehouse', 'Item Group', 'Customer Group', 'Sales Person', 'Territory', 'Assessment Group']
 
 # website
-update_website_context = "erpnext.shopping_cart.utils.update_website_context"
+update_website_context = ["erpnext.shopping_cart.utils.update_website_context", "erpnext.education.doctype.education_settings.education_settings.update_website_context"]
 my_account_context = "erpnext.shopping_cart.utils.update_my_account_context"
 
 email_append_to = ["Job Applicant", "Lead", "Opportunity", "Issue"]
diff --git a/erpnext/www/lms.html b/erpnext/www/lms.html
index 1796194..aa76ca0 100644
--- a/erpnext/www/lms.html
+++ b/erpnext/www/lms.html
@@ -5,6 +5,35 @@
 {% block navbar %}{% endblock %}
 
 {% block content %}
+{% if lms_enabled %}
 <div id="lms-app"></div>
 <script type="text/javascript" src="/assets/js/lms.min.js"></script>
+{% else %}
+<style>
+.hero-and-content {
+	background-color: #f5f7fa;
+}
+header, footer {
+	display: none;
+}
+html, body {
+	background-color: #f5f7fa;
+}
+{% include "templates/styles/card_style.css" %}
+</style>
+
+<div class='page-card'>
+	<div class='page-card-head'>
+		<span class='indicator darkgrey'>{{_("Page Missing or Moved")}}</span>
+	</div>
+	<p>{{_("The page you are looking for is missing. This could be because it is moved or there is a typo in the link.")}}</p>
+	<div><a href='/' class='btn btn-primary btn-sm'>{{ _("Home") }}</a></div>
+</div>
+<p class='text-muted text-center small' style='margin-top: -20px;'>{{ _("Error Code: {0}").format('404') }}</p>
+<style>
+.hero-and-content {
+	background-color: #f5f7fa;
+}
+</style>
+{% endif %}
 {% endblock %}
\ No newline at end of file