Bug 917337 - [Clock] Implement Scrolling for Timer Settings

https://bugzilla.mozilla.org/show_bug.cgi?id=917337

- Adds overflow-y: auto to #timer-dialog
- Adds a event.preventDefault() on touchstart on the time picker to stop user from scrolling while spinning inputs

r=jugglinmike
(cherry picked from commit 909f18894ba8872046afe5bc0a28032a3d331f44)
Bug 917956 - [Clock] Timer spinner allows for out-of-bound input - r=jugglinmike

- The "upper" limit of the select should be the length of values - 1 (not the length)
(cherry picked from commit 8a4a02484fadf275a43c112153b88eb7b1538862)
Merge pull request #12297 from julienw/917028-add-more-than-1-contact

Bug 917028 - [B2G][SMS] Compose an SMS: Unable to add more than one reci...(cherry picked from commit 7de288abc0993c69cd36daf0e0862710d21689ea)
Bug 916774 - [Clock] Rename StopwatchPanel => Stopwatch.Panel, move Timer.Panel to timer_panel.js

r=jugglinmike
(cherry picked from commit dba552fc02c08d1f9651e4ebce347ef586dde272)
Bug 917835 - [Clock] Timer does not honor settings - r=jugglinmike
(cherry picked from commit f70518eb4ecffd2611ddf912abe1f9127dd5f829)
Merge pull request #11847 from jimporter/music-nowplaying-notification

Bug 902974 - [Music] [User Story] Utility tray should display information about the song when music is still playing; r=alive, r=lightsofapollo, r=dkuo, r=djf, ui-r=robmac(cherry picked from commit 63a90ad59764cd327ac60c69522efefd1ee5ffb9)
Merge pull request #12360 from ian-liu/bluetooth/Bug898412_Redundant_notification_of_received_file

Bug 898412 - [Bluetooth] Redundant notification of received file, r=@alivedise (cherry picked from commit abd9988a27a62d1857a8674d823aa1f29753f16e)
Bug 909622 - [B2G][Helix][messages][zhaotao]Sending mms with attachment(chinese name mp3) fail - r=julienw

- Replace all non standard word characters in filenames with a # while encoding SMIL
- Remove HTML escaping in preference for replacing unsafe chars with the #
- Add unit test to ensure that quotes are always escaped
(cherry picked from commit c6625624dec07e2c875c8f3019b512f5ed2d076e)