Fixes Bug 1061518 jshint errors in fake_update-checker.js r=yurenju
Bug 1064463 - Do not set caller id explicitly when users preference is not available
Bug 935103 - Remove confirmation popup after PIN screen.
Bug 1073032 - Clear ambient indicator when removing notification
Bug 1072723 - [NFC] Could not import contact via NFC
Bug 1060577 - Adjust Rocketbar backdrop opacity when displaying results
Bug 1005331 - JSHint fixes for shared/js/media/
Bug 912645: ability to indicate notification modes
Bug 1072834 - Remove simple tiling from developer panel
Bug 1062803 - Replace the custom functions used to load JSON files with the new shared helper in the system app.
Bug 1044525 - Avoid poking with DOM elements in various modules aside from renderer by using a WeakMap to hold layout key objects, mapped from DOM elements.

- render.js's key properties normalization is now done in LayoutNormalizer. The normalization for static layouts takes place in layout loader, when the layout is loaded. Layout Manager's on-the-fly generated keys are pre-normalized in the hard-coded structures.
- Also, removed parseInt() on keycodes where suitable as we now retreive "number" from the objects held by WeakMap.

We have two WeakMaps, one maps DOM element to abstract target objects ("forward" map), and one maps inversely ("reverse" map)
Policy of accessing those WeakMaps is:
- IMERender and AltCharMenu(View) can set both forward and reverse maps by calling IMERender.setDomElemTargetObject, a small helper function.
- Everyone can retrieve forward mapping (elem to obj) in layoutRenderingManager with LRM.getTargetObject.
- Only IMERender and AltCharMenu(View) can retrieve reverse mapping (obj to elem) accessible through IMERender's reverse map (targetObjDomMap).
 -- currently we need to allow AltCharMenuManager to do so 'coz their responsibility and coupling aren't very clear.
 -- we probably need some refactoring work to reassign the responsibility and coupling such that targetObjDomMap isn't unnecessarily exposed.
Bug 1071382 - [Settings] 2 Icons of brightness level out of place.r=arthurcc
Bug 1073728 - Reset favicons object after location change r=alive r=daleharvey
Bug 1073157 - [System] fix wallpaper_manager.js tests with a newer mocha r=djf
Bug 1073139 - [Settings] fix settings tests with a newer mocha r=arthurcc
Bug 1055038 - False positive in test_lockscreen_unlock_to_camera
Merge pull request #24464 from albertopq/1073032-call-log-notif

Bug 1073032 - Clear ambient indicator when removing notification r=mhenretty
Merge pull request #24287 from ddrmanxbxfr/bug_1005331

Bug 1005331 - JSHint fixes for shared/js/media/. r=timdream
Merge pull request #24247 from ddrmanxbxfr/bug_1062803

Bug 1062803 - Replace the custom functions used to load JSON files with ...r=alive
Bug 1067772 - (app-grouping) Naming/renaming groups