[minor] setup wizard language fix and no submit messages for gl/sl entry

erpnext/accounts/doctype/gl_entry/gl_entry.py

@@ -10,8 +10,8 @@ from frappe import _
 from frappe.model.document import Document
 
 class GLEntry(Document):
-
 	def validate(self):
+		self.flags.ignore_submit_comment = True
 		self.check_mandatory()
 		self.pl_must_have_cost_center()
 		self.validate_posting_date()

erpnext/setup/page/setup_wizard/setup_wizard.py

@@ -28,7 +28,7 @@ def setup_account(args=None):
 
 		args = frappe._dict(args)
 
-		if args.language != "english":
+		if args.language and args.language != "english":
 			set_default_language(args.language)
 
 		install_fixtures.install(args.get("country"))

erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py

@@ -14,6 +14,7 @@ class StockFreezeError(frappe.ValidationError): pass
 
 class StockLedgerEntry(Document):
 	def validate(self):
+		self.flags.ignore_submit_comment = True
 		from erpnext.stock.utils import validate_warehouse_company
 		self.validate_mandatory()
 		self.validate_item()