BAC-486: merge 1.19.7 changes
added chack for null revision
added missing wfProfileOut
MAIN-300: fixing fatal in mobile article comments
Fix for videos on mobile
UncategorizedPages: corrected case

In MW autoloader "case correcting" behavior was disabled as it costs performance when using more then one autoloader. One case was not properly addresed - special page UncategorizedPages. Correcting this now.
ShortpagesPage: corrected case

In MW autoloader "case correcting" behavior was disabled as it costs performance when using more then one autoloader. One case was not properly addresed - special page ShortpagesPage. Correcting this now.
Special pages: corrected case
Special pages: corrected case
WikiaHomePageHelper: fixing image serving params

back-to-roots branch introduced bug in WikiaHomePageHelper when initializing ImageServing. Fixing.
Changing based on feedback
Merge branch 'release-170-fix-wikiahomepagehelper-with-backtoroots' into dev
Merge branch 'release-170-fix-special-UncategorizedPages' into dev