Update is_ prefixes
Fixed widgets

Let fire and brimstone hail down upon whomever is guilty of this. For all eternity.
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Merge branch 'refs/heads/2.3/develop' into 3.0/develop

Conflicts:
	system/cms/modules/widgets/js/widgets.js
Merge branch 'refs/heads/3.0/develop' into AIWS/production