[demo] [minor] fixes

erpnext/demo/demo.py

@@ -26,6 +26,10 @@ bench --site demo.erpnext.dev execute erpnext.demo.demo.simulate
 def make(domain='Manufacturing'):
 	frappe.flags.domain = domain
 	setup_data()
+	site = frappe.local.site
+	frappe.destroy()
+	frappe.init(site)
+	frappe.connect()
 	simulate()
 
 def simulate():

erpnext/demo/user/purchase.py

@@ -104,11 +104,14 @@ def make_material_request(item_code, qty):
 		mr.material_request_type = "Purchase"
 
 	mr.transaction_date = frappe.flags.current_date
+
+	moq = frappe.db.get_value('Item', item_code, 'min_order_qty')
+
 	mr.append("items", {
 		"doctype": "Material Request Item",
 		"schedule_date": frappe.utils.add_days(mr.transaction_date, 7),
 		"item_code": item_code,
-		"qty": qty
+		"qty": qty if qty > moq else moq
 	})
 	mr.insert()
 	mr.submit()

erpnext/demo/user/stock.py

@@ -29,7 +29,10 @@ def make_purchase_receipt():
 
 			pr.posting_date = frappe.flags.current_date
 			pr.insert()
-			pr.submit()
+			try:
+				pr.submit()
+			except NegativeStockError:
+				pass
 			frappe.db.commit()
 
 def make_delivery_note():