lvs-log-swap -> lvs-log-summary, +lvs-log-description
Update test framework:

* Allow specific groups to be tested
* Update tests to include MediaFeatures group
Update readme file
+ja ns i18n
Merge remote-tracking branch 'origin/dev' into VOLDEV-18

Conflicts:
	extensions/wikia/LicensedVideoSwap/LicensedVideoSwap.i18n.php
from change on origin/dev
CE-86 add permission welcomeexempt to STAFF group
CE-990 add $variable_id to Log (it was missing)
CE-990 correct code format
CONN-622 wall notification admin entity was always empty; changing the array key name fixed isse with not displaying removals of messages in thread history
MAIN-3073 add processData and contentType parameter to ajax request in nirvana.js
CONN-622 | Fix for removing Wall replies
CON-2022 | maintenance script for fixing broken removed wall replies
CONN-622 | Wall removing replies - one more fix
HG-251 Add video duration to article JSON output
Merge pull request #5167 from Wikia/MAIN-3073

MAIN-3073 add processData and contentType parameter to ajax request in nirvana.js
ADEN-1512 Fix alignment of MOBILE_TOP_LEADEBOARD
Merge pull request #5210 from Wikia/aden-1512-fix-mobile-leaderboard-alignment

ADEN-1512 Fix alignment of MOBILE_TOP_LEADEBOARD
MWEB-1028: prevent reloading the page after submiting the form by hitting enter
Merge pull request #5187 from Wikia/CONN-622

CON-2022 | Fix for removing Wall replies + maintenance script