Bug 941004 - Refactor add browser bookmark into an app object
Bug 937336 - Remove where possible explicit frame switching

Replacing explicit frame switching calls to use the encapsulated switch_to_displayed_app method
Bug 949062 - Update test_music.py file to be more explicit about failing to play the mp3 file
Bug 950800 - Add hardware composer setting

Now you can toggle the hardware composer on/off at any point without
restarting B2G.
Bug 942726 - Activate APZ for all Gaia apps for non-user build. r=alive
Bug 951252 - Remove warning on undefined role when checking hidden status

There is too much output because in the default case, role is undefined.
As per bug 951252, let's disable the output.
[Bug 952449] New: [Messages] Fix the un-fixed issues reported in the review of Bug #907740
Merge pull request #14795 from lissyx/bug951252

Bug 951252 - Remove warning on undefined role when checking hidden status r=vingtetun
Merge pull request #14853 from AndreiH/bug_949062

Bug 949062 - Update test_music.py file to be more explicit about failing...
Bug 797661 - Hotspot should have random password
Merge pull request #14894 from jmcanterafonseca/bug_952449

[Bug 952449] [Messages] Fix the un-fixed issues reported in the rev...
Merge pull request #14611 from arroway/bug-797661

Bug 797661 - Hotspot should have random password, r=kaze
Bug 952455 - [Contacts][Bluetooth] "Export to Bluetooth" message blocks the Contacts app and leaves it unusable
Bug 952123 - Improve wait and frame switch after closing the cost control FTU
Bug 946652 - Merge LockScreen class into GaiaDevice class; r=zacc
Merge pull request #14849 from bobsilverberg/switch_to_displayed_app

Bug 937336 - Remove where possible explicit frame switching
Merge pull request #14897 from gtorodelvalle/contacts-bug-952455-export-to-bluetooth

Bug 952455 - [Contacts][Bluetooth] "Export to Bluetooth" message blocks the Contacts app and leaves it unusable
Bug 952158 - Guard form submission r=vingtetun
Merge pull request #14815 from sashakruglov/bug946652

Bug 946652 - Merge LockScreen class into GaiaDevice class; r=zacc
Merge pull request #14900 from KevinGrandon/bug_952158_rocketbar_submit_form_guard

Bug 952158 - Guard form submission r=vingtetun