Bug 998299 - Add Neo layout

[Neo](http://www.neo-layout.org/) is another layout for keyboards.

Since Neo request at least 11 keys in each line this is a adaptation
of it to mobile devices (a adaptation to Android is available at
https://play.google.com/store/apps/details?id=com.anysoftkeyboard.languagepack.neo2&hl=en).
Bug 968709 - Allow system app to listen to bluetooth-pairing-request.
Bug1006919- [Gallery] Remove work around to generate and pass file backed blob for pick activity in gallery.js r=djf
Bug 1009368 - Configure keyboard correctly
Bug 1010394 - Refresh the items when entering the carrier panel
Bug 1012497 - [Build System] Add GAIA_DEVICE_TYPE flag in Android.mk.
Bug 1009254 - [STK] No option on UI  to terminate/abort the proactive session
Bug 1012627 - Use the "Dot" reporter on Travis r=yurenju
Bug 1012545 - Prevent a fluffing/rendering issue on the add-contact-button.
Bug 1003060 - [VR][Messaging] Empty circle to the right in messages without recipient
Bug 986506 - [system] Offline warning when downloading updates looks broken with longer text
Bug 1008039 - [Flame][Camera][1.4][2.0] Tapping the 'switch camera' button 4 times rapidly results in black viewfinder
Bug 1011087 - Hide the keyboard at the beginning of an edge gesture.
Bug 1009963 - Making sure the fullscreen status bar panel doesn't steal focus from the active app.
Bug 1012692 - (vertical-homescreen) Add option to change the wallpaper
Bug 1005511 - JSHint fixes for shared/js/device_storage/ r=djf
Bug 971552 - [System2] Instantiable SleepMenu r=alive
Bug 980394 - Removes references to mozMobileConnection and references mozMobileConnections in the call screen and dialer.
Bug 1013599 - Add Swahili (sw) locale
bug 1007965

* DownloadHelper should use new 'storageName' and 'storagePath' properties on DOM Download object instead
  of munging path manually.
* DownloadStore should save 'storageName' and 'storagePath' properties to DataStore for later use.

r=crdlc