VID-1767 Add extra logging to updateThumbnailTask
VID-1767 Add comments
Add more docs
VID-1767 fix typo
VID-1767 Send arguments in correct order
VID-1767 Make sure not to pass Title object
VID-1767 Code review changes
Merge pull request #4358 from Wikia/VID-1767

VID-1767 Add extra logging to updateThumbnailTask