Bug 1047660 - Making the software home button and the edge gestures play nice in landscape.
Bug 1057277 - [Email][Signature] Signature text displayed different with UX specification
Merge pull request #23228 from awiss/bug1057277-signature-button

Bug 1057277 - [Email][Signature] Signature text displayed different with UX specification r=jrburke
Bug 1057668 - Stop ignoring scroll events in browser tab page. r=kgrandon
Merge pull request #22886 from etiennesegonzac/bug-1047660

Bug 1047660 - Making the software home button and the edge gestures play nice in landscape r=21
Merge pull request #23233 from daleharvey/1057668

Bug 1057668 - Stop ignoring scroll events in browser tab page