fix: remove illustrations from onboarding slides (#19872)

* fix: remove illustrations from onboarding slides

* fix: change Welcome slide's description

* fix: justify text in slide
diff --git a/erpnext/buying/onboarding_slide/add_a_few_suppliers/add_a_few_suppliers.json b/erpnext/buying/onboarding_slide/add_a_few_suppliers/add_a_few_suppliers.json
index d3adcb7..ce3d8cf 100644
--- a/erpnext/buying/onboarding_slide/add_a_few_suppliers/add_a_few_suppliers.json
+++ b/erpnext/buying/onboarding_slide/add_a_few_suppliers/add_a_few_suppliers.json
@@ -12,9 +12,10 @@
   }
  ],
  "idx": 0,
- "image_src": "/assets/erpnext/images/illustrations/supplier-onboard.png",
+ "image_src": "",
+ "is_completed": 0,
  "max_count": 3,
- "modified": "2019-12-03 22:53:50.552445",
+ "modified": "2019-12-09 17:54:18.452038",
  "modified_by": "Administrator",
  "name": "Add A Few Suppliers",
  "owner": "Administrator",
diff --git a/erpnext/public/images/illustrations/customers-onboard.png b/erpnext/public/images/illustrations/customers-onboard.png
deleted file mode 100644
index 4a517bd..0000000
--- a/erpnext/public/images/illustrations/customers-onboard.png
+++ /dev/null
Binary files differ
diff --git a/erpnext/public/images/illustrations/desk-onboard.png b/erpnext/public/images/illustrations/desk-onboard.png
deleted file mode 100644
index 74b632d..0000000
--- a/erpnext/public/images/illustrations/desk-onboard.png
+++ /dev/null
Binary files differ
diff --git a/erpnext/public/images/illustrations/letterhead-onboard.png b/erpnext/public/images/illustrations/letterhead-onboard.png
deleted file mode 100644
index fdfd16a..0000000
--- a/erpnext/public/images/illustrations/letterhead-onboard.png
+++ /dev/null
Binary files differ
diff --git a/erpnext/public/images/illustrations/products-onboard.png b/erpnext/public/images/illustrations/products-onboard.png
deleted file mode 100644
index 2dee203..0000000
--- a/erpnext/public/images/illustrations/products-onboard.png
+++ /dev/null
Binary files differ
diff --git a/erpnext/public/images/illustrations/supplier-onboard.png b/erpnext/public/images/illustrations/supplier-onboard.png
deleted file mode 100644
index 30335f2..0000000
--- a/erpnext/public/images/illustrations/supplier-onboard.png
+++ /dev/null
Binary files differ
diff --git a/erpnext/selling/onboarding_slide/add_a_few_customers/add_a_few_customers.json b/erpnext/selling/onboarding_slide/add_a_few_customers/add_a_few_customers.json
index f39fea4..92d00bc 100644
--- a/erpnext/selling/onboarding_slide/add_a_few_customers/add_a_few_customers.json
+++ b/erpnext/selling/onboarding_slide/add_a_few_customers/add_a_few_customers.json
@@ -12,9 +12,10 @@
   }
  ],
  "idx": 0,
- "image_src": "/assets/erpnext/images/illustrations/customers-onboard.png",
+ "image_src": "",
+ "is_completed": 0,
  "max_count": 3,
- "modified": "2019-12-03 22:54:28.959549",
+ "modified": "2019-12-09 17:54:01.686006",
  "modified_by": "Administrator",
  "name": "Add A Few Customers",
  "owner": "Administrator",
diff --git "a/erpnext/setup/onboarding_slide/welcome_back_to_erpnext\041/welcome_back_to_erpnext\041.json" "b/erpnext/setup/onboarding_slide/welcome_back_to_erpnext\041/welcome_back_to_erpnext\041.json"
index bf330d0..f00dc94 100644
--- "a/erpnext/setup/onboarding_slide/welcome_back_to_erpnext\041/welcome_back_to_erpnext\041.json"
+++ "b/erpnext/setup/onboarding_slide/welcome_back_to_erpnext\041/welcome_back_to_erpnext\041.json"
@@ -7,10 +7,10 @@
  "domains": [],
  "help_links": [],
  "idx": 0,
- "image_src": "/assets/erpnext/images/illustrations/desk-onboard.png",
+ "image_src": "",
  "is_completed": 0,
  "max_count": 3,
- "modified": "2019-12-04 19:21:39.995776",
+ "modified": "2019-12-09 17:53:53.849953",
  "modified_by": "Administrator",
  "name": "Welcome back to ERPNext!",
  "owner": "Administrator",
diff --git "a/erpnext/setup/onboarding_slide/welcome_to_erpnext\041/welcome_to_erpnext\041.json" "b/erpnext/setup/onboarding_slide/welcome_to_erpnext\041/welcome_to_erpnext\041.json"
index 4ea6985..37eb67b 100644
--- "a/erpnext/setup/onboarding_slide/welcome_to_erpnext\041/welcome_to_erpnext\041.json"
+++ "b/erpnext/setup/onboarding_slide/welcome_to_erpnext\041/welcome_to_erpnext\041.json"
@@ -7,13 +7,14 @@
  "domains": [],
  "help_links": [],
  "idx": 0,
- "image_src": "/assets/erpnext/images/illustrations/desk-onboard.png",
+ "image_src": "",
+ "is_completed": 0,
  "max_count": 0,
- "modified": "2019-12-03 22:49:12.871260",
+ "modified": "2019-12-22 21:26:28.414597",
  "modified_by": "Administrator",
  "name": "Welcome to ERPNext!",
  "owner": "Administrator",
- "slide_desc": "Setting up an ERP can be overwhelming. But don't worry, we have got your back!\nLet's setup your company.\nThis wizard will help you onboard to ERPNext in a short time!",
+ "slide_desc": "<div class=\"text center\">Setting up an ERP can be overwhelming. But don't worry, we have got your back! This wizard will help you onboard to ERPNext in a short time!</div>",
  "slide_fields": [],
  "slide_module": "Setup",
  "slide_order": 1,
diff --git a/erpnext/stock/onboarding_slide/add_a_few_products_you_buy_or_sell/add_a_few_products_you_buy_or_sell.json b/erpnext/stock/onboarding_slide/add_a_few_products_you_buy_or_sell/add_a_few_products_you_buy_or_sell.json
index 27a3062..5ee3167 100644
--- a/erpnext/stock/onboarding_slide/add_a_few_products_you_buy_or_sell/add_a_few_products_you_buy_or_sell.json
+++ b/erpnext/stock/onboarding_slide/add_a_few_products_you_buy_or_sell/add_a_few_products_you_buy_or_sell.json
@@ -7,9 +7,10 @@
  "domains": [],
  "help_links": [],
  "idx": 0,
- "image_src": "/assets/erpnext/images/illustrations/products-onboard.png",
+ "image_src": "",
+ "is_completed": 0,
  "max_count": 3,
- "modified": "2019-12-03 22:54:07.558632",
+ "modified": "2019-12-09 17:54:09.602885",
  "modified_by": "Administrator",
  "name": "Add A Few Products You Buy Or Sell",
  "owner": "Administrator",