add multiple columns
js use strict
Revised function comments.
Merge branch '4.0' of github.com:impresspages/ImpressPages-CMS into develop

Conflicts:
	Ip/Internal/Content/Widget/Columns/look/default.php
recompile js
Added draft docblock comments.
Merge branch 'develop' of github.com:impresspages/ImpressPages-CMS into develop