As per documentation, option-based redirect should only occur on successful AJAX requests (pushing a redirect from the server still works)
Add Save & Close button to settings pages
Trigger invalid on all fields, but only focus the first one. Also pass the messages across.
Pass isFirstField attrib, allow prevent of default focus()
Add missing comma to array language definition

Line 17 - there was a missing comma between the items of the 'locale' array