VE-1304: Fix for editing videos

It's a quick, solid, but not elegant fix.
VE-1304: Restored accidently removed empty line
Merge pull request #4054 from Wikia/VE-1304

VE-1304: Fix for editing videos
VE-1261 Using super
VE-1312: Blur contentEditable node while destroying surface.

https://gerrit.wikimedia.org/r/#/c/144089/

This solves problem in FF - cursor remains being visible
after canceling edit and switching back to view mode.

Also a fix for accidently comited conflict.
Merge pull request #4059 from Wikia/VE-1312

VE-1312: Blur contentEditable node while destroying surface.
Merge pull request #4057 from Wikia/VE-1196

VE-1196