PLA-700 multiple lang support
PLA-700 changing boosting for cross wiki api call
PLA-700 name refactoring
PLA-700 all languages handling
PLA-700 test fixes
PLA-700 docs change
PLA-700 mulit lang test added
PLA-700 docs lang description changed, lang param is no longer required, as default it will be set to current wikia content language
PLA-700 default setting
Merge branch 'dev' into PLA-700

Conflicts:
	extensions/wikia/Search/classes/QueryService/Select/AbstractSelect.php
Merge branch 'PLA-700' into dev