ADEN-1201 PageFair Test
ADEN-1201 AnalyticsProvider PageFair
ADEN-1201 Do not enable PageFair if wgEnableAdEngineExt is false
ADEN-1201 CR changes
ADEN-1201 - Load PageFair on mobile
Merge pull request #4080 from Wikia/aden-1201-pagefair-test

Aden 1201 pagefair test