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 1009368 - Configure keyboard correctly
Bug 1010394 - Refresh the items when entering the carrier panel
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 980394 - Removes references to mozMobileConnection and references mozMobileConnections in the call screen and dialer.
Bug 1013599 - Add Swahili (sw) locale
Include utils.js in hotspot_test.js so that openDialog is defined.
Bug 1009444 - [Stingray] initialize widgets based on the result of widget editor
Bug 999235 - STK: Gaia is sending random Terminal Response in response to proactive commands form the STK app.
Bug 1013803 - NFC: TypeError: suite.skip is not a function when running Gaia Unit test.
Bug 1013826 - [System] Fix duplicated string ID (add-to-home-screen)
Bug 992193 - [Dialer] USSD notify/request specific UI management
- Hide button when no response expected
- Simple tests added
Merge pull request #19297 from etiennesegonzac/bug-1011087

Bug 1011087 - Hide the keyboard at the beginning of an edge gesture. r=alive