Bug 836276 - remove "alert-sound.enabled" and "alert-vibration.enabled"
System app fires notification by looking "ring.enabled" and
"vibration.enabled" instead.
Bug 856646 - Hotmail contacts without user_id are not detected as already imported
Bug 856716 - [music] fix the lack of ModeManager
Merge pull request #8862 from evelynhung/issue-836276

Bug 836276 - remove "alert-sound.enabled" and "alert-vibration.enabled"
Merge pull request #8916 from jmcanterafonseca/fix_hotmail_already

Bug 856646 - Hotmail contacts without user_id are not detected as alread...
Merge pull request #8930 from dominickuo/bug-856716

Bug 856716 - [music] fix the lack of ModeManager, r=mozsquib