Merge pull request #13718 from bobsilverberg/fix_dnt

Bug 938707 - Fix failure of test_settings_do_not_track
Merge pull request #13515 from acperez/bug-936028

Bug 936028 - Remove appcache in hosted single variant apps to avoid wrong installation without internet connection. r=yurenju
Merge pull request #13556 from lodr/bug-934996-data-error

Bug 934996 - Changing issues indicators and preventing duplicated events...
r=jmcf
Merge pull request #13799 from etiennesegonzac/bug-939773-asyncstorage-error-suggestion

Bug 939773 - Fixing a ReferenceError: asyncStorage the first time the keypad suggestion is used after a cold launch. r=rik
Merge pull request #13530 from etiennesegonzac/bug-933279-conf-call-attention-screen-show

Bug 933279 - Always displaying the call screen attention screen for each extra incoming or outgoing call. r=alive
Bug 937389 - Refresh caller ID settings when settings app becomes visible
Merge pull request #13740 from crh0716/937389

Bug 937389 - Refresh caller ID settings when settings app becomes visible r=crh0716
Bug 930052 - Reduce exposure to launch() method inside tests.
Merge pull request #13535 from EverythingMe/936544-collections-dedup

Bug 936544 - [e.me][bug] Cloudapps do not get deduped in Collections [r=...
Merge pull request #13665 from bebef1987/delete_contact

Bug 938051 - Intermittent failure in test_delete_contact
[bug 906273] increase height of label wrapper to avoid clipping Arabic-script text

This enables us to display Arabic-script labels without clipping and without disrupting the baseline position of the label text; the margin adjustments are to maintain the existing position of the text in relation to the icon, while its display box is enlarged to allow for taller glyphs to be drawn.
Bug 917196 - When short tones are enabled make audible tones short too r=etienne
Merge pull request #13644 from bobsilverberg/gecko_prefs

Bug 932750 - Add helper methods to GaiaData to get and set Gecko prefs
Merge pull request #13814 from jfkthame/patch-3

[bug 906273] increase height of label wrapper to avoid clipping Arabic-s...
Bug 937532 - Migrate calendar tests to use an app object
Merge pull request #13661 from EverythingMe/932836-collections-cache-response

Bug 932836 - [e.me] Cache Collection suggestion list for offline state
Bug 939776 [Keyboard][jp-kanji] Change key notation
Merge pull request #13607 from JohanLorenzo/calendar-app-object

Bug 937532 - Migrate calendar tests to use an app object
Merge pull request #13794 from Rik/conference-call-hold-925359

Bug 925359 - Tapping on the Group call layer holds the call r=etienne
Bug 940291 - [Download Manager] Implement UIs to support when the user opens a file and this action fails