[Enhance] Subscription module (#10089)

* [Enhance] Subscription module

* Added view documents from the subscription form

* Test cases

* documentation

* UI Test cases, fixes

* Removed child table in the subscription

* Provision to make subscription from the document, added subscription in the dashboard for the sales and buying flow

* added patch to make subscription from the recurring data

* Rename field subscriptio to subscription_id, added new test cases, remove recurring_document from controller

* renamed subscription_id to subscription

erpnext/public/js/utils.js

@@ -127,6 +127,20 @@ $.extend(erpnext.utils, {
 		}
 	},
 
+	make_subscription: function(doctype, docname) {
+		frappe.call({
+			method: "erpnext.subscription.doctype.subscription.subscription.make_subscription",
+			args: {
+				doctype: doctype,
+				docname: docname
+			},
+			callback: function(r) {
+				var doclist = frappe.model.sync(r.message);
+				frappe.set_route("Form", doclist[0].doctype, doclist[0].name);
+			}
+		})
+	},
+
 	/**
 	* Checks if the first row of a given child table is empty
 	* @param child_table - Child table Doctype