Bug 885278 - [SMS] `updateTimeHeaders' is not working properly with FixedHeader feature. r=borja

* always call refresh in updateTimeHeaders
* expose updateHeaderContent and use it in updateTimeHeaders so that the fixed
  header is changed in the same time than the other headers
Bug 891984: Properly render contacts in favorites.

Previously if a contact was a favorite, then we would only render it once
in either its main letter group or the favorites group.  This patch correctly
tracks the group so that we reference the contact properly in order to
render it for both groups.
Bug 881146 - hdpi/xhdpi resolution assets and layout for First run experience app
Bug 890847 - [SMS/MMS] The options shown in the dialog when tapping on a contact into ‘To’ field are the wrong way round
Bug 885676 - Added unit tests for ScreenManager
Merge pull request #10835 from cctuan/890847

Bug 890847 - [SMS/MMS] The options shown in the dialog when tapping on a contact into ‘To’ field are the wrong way round
Merge pull request #10694 from yurenju/885676

Bug 885676 - Added unit tests for ScreenManager r=alive
Merge pull request #10726 from julienw/885278-updatetimeheaders-with-fixedheader

885278 updatetimeheaders with fixedheader
Merge pull request #10918 from crh0716/892393

Bug 892393 - Add 1.5x resolution assets r=rexboy
Bug 888153 - [contacts] Import from vCard 4.0 has email missing in Contacts app
Merge pull request #10901 from comoyo/vcf4

Bug 888153 - [contacts] Import from vCard 4.0 has email missing in Contacts app
Revert "Merge pull request #10669 from RudyLu/keyboard/swipe_hide_keyboard_2"

This reverts commit 103f3635c241e208f84b6e8d80afb23731043c09, reversing
changes made to 4be813b65ea30e3914ce732d1401385d8fb78b68.
Merge pull request #10923 from comoyo/revert_swipe_to_hide

Revert "Merge pull request #10669 from RudyLu/keyboard/swipe_hide_keyboard_2"
Merge pull request #10902 from wanderview/contacts-favorites

Bug 891984: Properly render contacts in favorites.  r=crdlc
Bug 892155: Fully defer order/search string calc
Bug 890291 - [MMI] Follow-up of Localization of Call Barring functionality. r=etienne
Bug 890463 - Follow up of Use MMIResult for get IMEI - default case. r=etienne
Merge pull request #10928 from ferjm/mmiresultdefaultcase

Follow up for MMI localization work
Merge pull request #10903 from wanderview/contacts-full-defer-order-search

Bug 892155: Fully defer order/search string calc.  r=arcturus
Branch 892659: Remove misplaced ; in tag_visibility_monitor