VID-1843 updating thumbnail scss to work in monobook and oasis, and begining to remove old thumbnail style code
VID-1551 cleaning up some old/unused video code
VID-1551 some more removal of videoPlayButtonOverlay code
cherry-picked commit 02088b80809a0ef4070f3f819e6d92de2215775c
VID-1551 more old code removal
VID-1551 removing old file
VID-1551 removing 'useTemplate' from Oasis
VID-1551 updating css classes
VID-1551 updating markup for unit test
VID-1551 whitespace
Merge pull request #4282 from Wikia/VID-1551-and-VID-1843

VID-1551 and VID-1843