PLA-763 PLA-770 LicensedWikisService implementation
PLA-763 PLA-770 LicensedWikisService unit test
PLA-763 PLA-770 LicensedWikisService isCommercialUseAllowedForThisWiki method
PLA-763 PLA-770 LicensedWikisService tests
PLA-760: Special:Search should not whitepage on empty search query
PLA-760: Special:Search should not whitepage on empty search query
PLA-772: method to tell whether non-commercial only content should be hidden in API requests
PLA-773: block external API requests on licensed wikis
PLA-763: fixed string concat in class definition
PLA-764 merge