Merge pull request #1033 from Wikia/lvs-tracking

VID-357 tracking for LVS
VID-357 adding impression tracking event on LVS page load
Video (vid-501): WikiaVideoAdd - show error message if wgAllowNonPremiumVideos is false when adding non premium videos
CE-64 Adding Paginator
CE-64 Changing WIKIS_PER_PAGE_LIMIT
CE-26 Adding credits for Special:Version
DAR-730: Fixed getting entry point for api when db name is other than host name
DAR-730: Removed mocked data after ApiService fix
Merge branch 'css-chrome-sprint12' into DAR-730
Merge branch 'css-chrome-sprint12' into DAR-730
fixed the bug found during functional tests phase
create links to user blog and to the post to right community wiki
BAC-511: ImageServing: add unit test case for <tabber> tag
BAC-519: Check email blocks only while user account creation
BAC-527: non-static => static methods + fix UserRenameTool - there is array with expire = null, so "null" value should be checked
BAC-527: === null => is_null
Merge pull request #1045 from Wikia/VideoSprint27-1-VID-502-NoYoutube

VID-502 Disable youtube tags on wikis that have wgAllowNonPremiumVideos ...
PLA-442 adding event for pressing enter after suggestion been shown
added dynamic queryfield loading
PLA-442 event name changed