Fix translate sales_invoice.js
diff --git a/accounts/doctype/sales_invoice/sales_invoice.js b/accounts/doctype/sales_invoice/sales_invoice.js
index aeae28c..b87f6ef 100644
--- a/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/accounts/doctype/sales_invoice/sales_invoice.js
@@ -60,7 +60,7 @@
 			var percent_paid = cint(flt(doc.grand_total - doc.outstanding_amount) / flt(doc.grand_total) * 100);
 			cur_frm.dashboard.add_progress(percent_paid + "% Paid", percent_paid);
 
-			cur_frm.add_custom_button('Send SMS', cur_frm.cscript.send_sms);
+			cur_frm.add_custom_button(wn._('Send SMS'), cur_frm.cscript.send_sms);
 
 			if(cint(doc.update_stock)!=1) {
 				// show Make Delivery Note button only if Sales Invoice is not created from Delivery Note
@@ -71,11 +71,11 @@
 					});
 				
 				if(!from_delivery_note)
-					cur_frm.add_custom_button('Make Delivery', cur_frm.cscript['Make Delivery Note']);
+					cur_frm.add_custom_button(wn._('Make Delivery'), cur_frm.cscript['Make Delivery Note']);
 			}
 
 			if(doc.outstanding_amount!=0)
-				cur_frm.add_custom_button('Make Payment Entry', cur_frm.cscript.make_bank_voucher);
+				cur_frm.add_custom_button(wn._('Make Payment Entry'), cur_frm.cscript.make_bank_voucher);
 		}
 
 		if (doc.docstatus===0) {