Bug 838114 - removing hidden numbers from call log fix

lint changes

lint changes

tests
Bug 867948 - Ensure findByPhoneNumber callback checks their values

This is legitimate (and it seems meaningfull) for findByPhoneNumber to
return either null or empty array, depending on the case. However, we
must ensure to properly check for those returns values, otherwise we
might blow up in the air.
Merge pull request #10028 from pivanov/bug-835311

Bug 835311 - [Contacts] Z-index for some components is not correct r=@samjoch
Bug 871909 - Importing contacts from sd card has problem with accented names [r=arcturus]
Bug 870419 - [Homescreen][User Story] when offline, need to know which apps can be used (initial scenarios)
Bug 865079 - [Call log] Remove synchronous reflows
Merge pull request #10033 from arcturus/homescreen-offline-filter-opacity

Bug 870419 - [Homescreen][User Story] when offline, need to know which apps can be used (initial scenarios)
Merge pull request #9990 from albertopq/dialer-new-call-log-3-lines

Bug 865079 - [Call log] Remove synchronous reflows
Bug 876757 - [contacts] Import connectors UI looks too big
Merge pull request #10042 from basiclines/contacts-fixes

Bug 876757 - [contacts] Import connectors UI looks too big
Bug 873972 - Add a setting to draw layers borders
Bug 876055 - Add defaults for the new device storage/automounter settings
Merge pull request #10043 from Rik/layers-draw-borders-873972

Bug 873972 - Add a setting to draw layers borders r=vingtetun
Bug 873972 - Fix typo in the settings name r=vingtetun
Merge pull request #10046 from dhylands/dhylands-876055-ds-settings.patch

Bug 876055 - Add defaults for the new device storage/automounter settings. r=gwagner
Bug 853362 - Move toggle flash / camera icons when filmstrip shown
Merge pull request #10045 from daleharvey/853362

Bug 853362 - Move toggle flash / camera icons when filmstrip shown. r=djf
Bug 832239 - [Settings] hide "Automatic brightness" if no ambient light sensor is supported, r=21
Merge pull request #10026 from fabi1cazenave/autoBrightness-bug832239

bug 832239 - [Settings] hide "Automatic brightness" if no ambient light sensor is supported, r=21
Bug 872430 - FM Radio shouldn`t use CPU wake lock, should have sleep state, r=alive