PLA-1200: RelatedPages should serve both image URL and snippet
PLA-1200: restored CACHE_DISABLED constant - unittests would not run without it
Merge pull request #2898 from Wikia/PLA-1200

PLA-1200: RelatedPages should server both snippet and image URL
PLA-1192 Added service for api access checking
Added expand=1 support to Articles/getPopular
Merge pull request #2908 from Wikia/PLA-popular-expanded

Pla popular expanded
Merge branch 'sony-backup' into PLA-1192
PLA-1192 fix after merge