Add dom.mozApps.use_reviewer_certs preference toggle
Bug 1017333 - Clear notifications when we open the call log

Also don't clear notifications when we reopen the dialer app on another tab
Bug 1026387 - [Dialer][Call log] 'missed' highlighted when tapping edit and back, then tapping 'all'
Bug 1021492 - [Camera] Use bower to manage dependencies in the lib/vendor directory
Bug 1028250 - [contacts] Remove unused strings custom.placeholder
Bug 1019120 - [camera] Recorded video doesn't appear in Gallery
Bug 1021500 - Keep layouts consistent

- Remove '_' from the second row for input "email"
- Remove ':' from the second row for input "url"
Bug 971618 - Add support for OMA DRM direct downloads
Bug 1023419 - Make Find My Device FxA button label consistent with other FxA buttons
Bug 888815 - [RTL] Notification stamp
Bug 1028126 - [Dialer][Call screen] In incoming call the buttons haven't a good alignment
Bug 1028692 - [Collection app] Deleted Smart Collections reappear after restart
Bug 1027991 - Use internal keyword to create child sheet window
Bug 1025519 - (vertical-homescreen) App icons are smaller than spec
Bug 1028551 - Add "da" danish to keyboard-layouts.json.
Merge pull request #20891 from RudyLu/keyboard/Bug1028551_commit

Bug 1028551 - Add "da" danish to keyboard-layouts.json.
r=rudylu
Merge pull request #20810 from flodolo/bug1028250

Bug 1028250 - [contacts] Remove unused strings custom.placeholder. r=francisco
Bug 1028270 - Edge swipes should dismiss the activity picker
Bug 1028154 - Dismiss value selectors when an edge gesture starts transitioning.
Bug 1026240 - Removing unnecessary will-change uses in the system app.