Workaround for Firefox 0S 2.0 which has getFeature(), not hasFeature() (bug 1097424)
Merge pull request #829 from diox/everything-is-terrible-lets-use-ua-detection

Workaround for Firefox 0S 2.0 which has getFeature(), not hasFeature() (bug 1097424)
Apply feature detection profile to feed APIs (bug 1103169)
Merge pull request #828 from diox/filter-feed-by-features-too

Apply feature detection profile to feed APIs (bug 1103169)
remove extra top margin on feed app preview tiles (bug 1109232)