BAC-541: add "sasses" request type to AssetsManager
BAC-541: add debug info into generated CSS
BAC-541: serve multiple SASS files in a single request in Oasis
BAC-541: use proper CSS comments
Better comment about why responsive layout is disabled for the HomePageExt.
Convert F::app() calls to use $app.
BAC-592: throw HTTP 503 when SASS processing ended up with an error
Merge branch 'dev' into bac-592-sass-errors-handling
BAC-625: added script to generate monthly stats for LyricFind
BAC-756: refactor Masthead

* remove $avoidUpscaling parameter from Masthead::getThumbnail()
* code cleanup
tests/php-services: add helper shell script
Add unit test for AvatarService
CreateNewWiki.js: don't pass an empty parameter to AJAX request
CreateWiki: remove Answers related code
Merge pull request #1486 from Wikia/bac-766-create-wiki-cleanup

BAC-766 CreateWiki cleanup
Merge pull request #1477 from Wikia/bac-756-masthead-refactored

BAC-756 Masthead refactored
ImageImporterTask: remove task not run since 2009
Merge pull request #1488 from Wikia/bac-757-remove-imageimportertask

BAC-757: remove ImageImporterTask
Remove ImageGrabberTask (not run since 2009)
WikiMover: PHP hinting