VID-1936 Implement galleries using <picture> tag
VID-1936 Add docs, cleanup debugging code
VID-1936 Change var name, remove unused default param
VID-1936 avoid duplicate code
VID-1936 removed unneeded pass by reference modifiers
VID-1936 Always use imgTag for noscripts
VID-1936 Only use one breakpoint for picture tag
VID-1936 spacing
VID-1936 remove unused controller method
Merge branch 'VideoSprint56' into VID-1936

Conflicts:
	includes/wikia/services/WikiaFileHelper.class.php
VID-1936 Update after getSquaredThumbnailUrl changes
VID-1936 Adding types to docs
VID-1936 make parameter optional
VID-1936 Find square dimension by choosing larger between height and width
Merge pull request #4683 from Wikia/VID-1936

VID-1936