Revert "Bug 986329 - Fix test_settings_XXX.py with JavascriptException: TypeError: window.wrappedJSObject.Settings is undefined"

This reverts commit fab38c4384733c3eed51ceaec2787c7d5962dcd3.
Bug 986329 - Fix test_settings_XXX.py with JavascriptException: TypeError: window.wrappedJSObject.Settings is undefined
Bug 975535 - [VsD Refresh] Update App Icons in Homescreen & Settings/App Permissions
Bug 984399 - Contacts list is not properly updated when importing a new FB Friend
Bug 988079 - [Calendar] day view sometimes adds duplicated days to the DOM
Bug 971554 - [System2] Instantiable SoundManager
Bug 988261 - Hide utility tray on launchapp event
Bug 963003 - Fix attention screen height on software home button shown
Bug 988399 - [B2G][Contacts] Contacts birthday set to January first incorrectly shows previous year
Bug 987283 -usage app cold_load_launch regressed 300ms Mar 22
Bug 975535 - E.me followups [r=ranbena]
Bug 805501 - Support different username / password / credentials for SMTP server from IMAP server. r=asuth
Bug 988900 - [first run] tutorial: 'ﬁ' in 'notiﬁcations' is one character, should be two (= 'notifications'). r=fcampo
Merge pull request #17319 from crdlc/bug-984399

Bug 984399 - Contacts list is not properly updated when importing a new ...
Bug 984151 - Make the contacts image pull up effect smoother. r=arcturus
Revert "Merge pull request #17673 from marshall/ftuPing"

This reverts commit c3c12544f7acbf0e66d7d481c0718634e068d3ce, reversing
changes made to d84935863b56ea76d7d33486f44a64467a70885f.
Bug 982033 - Fix bootstrap.js revert r=me
Bug 979750 - [System2] "attention_screen" and "media_recording" missing "Applications"
Bug 987224 - [B2G][Video]Unable to watch videos in video app after deleting two videos
Merge branch 'master' of https://github.com/mozilla-b2g/gaia