Bug 889396 - Sync button went away
Bug 881149 -  hdpi/xhdpi resolution layout for Homescreen app
     1. adjust to show 4 x 5 grid on WVGA.
     2. modify the scale ratio of app icon according to
        window.devicePixelRatio.
==============
     1. To address review comment, for reset the hidden of the 17th icon
     2. Add 1.5x graphics (not complete, some assets are still missing)
Merge pull request #10939 from RudyLu/homescreen/4x5grid_onWVGA_support

Bug 881149 -  hdpi/xhdpi resolution layout for Homescreen app. r=crdlc.
Bug 892658 - Disable grid_test.js in TBPL for very frequent orange, a=test-only
Merge pull request #10988 from jonallengriffin/disablegridtest

Bug 892658 - Disable grid_test.js in TBPL for very frequent orange, a=te...
Bug 893248 - Disable busytime_test.js for near perma-orange in TBPL, a=test-only
Merge pull request #10990 from jonallengriffin/disablebusytime

Bug 893248 - Disable busytime_test.js for near perma-orange in TBPL, a=t...
Merge pull request #10983 from gaye/bug-889396

Bug 889396 - Sync button went away r=lightsofapollo