#FEC-572: Support inline scrubber

test files: 
http://kgit.html5video.org/pulls/505/modules/KalturaSupport/tests/ResizablePlayerInlineScrubber.html

and normal test with feature config + mainfest docs, + volume control toggle: 
http://kgit.html5video.org/pulls/505/modules/KalturaSupport/tests/ScrubberControlsContainerParent.qunit.html