Bug 917028 - [B2G][SMS] Compose an SMS: Unable to add more than one recipient from Contacts r=borja

Remove the classList handling from updateComposerHeader because since version
1.1 we support sending multiple contacts.
Bug 918174: Load CSS from contacts index.html
Bug 908117: [B2G][dialer][tongxiao]Could not send out the USSD command when the USSD number is saved in the contact. r=jmcantera
Merge pull request #12297 from julienw/917028-add-more-than-1-contact

Bug 917028 - [B2G][SMS] Compose an SMS: Unable to add more than one reci...
Merge pull request #12329 from ferjm/bug908117.ussdfromcontacts

Bug 908117: [B2G][dialer][tongxiao]Could not send out the USSD command w...
Bug 891723 - Implement preloaded contacts customization by SIM. r=arcturus
Merge pull request #12318 from wanderview/contacts-css-opt-2

Bug 918174: Load CSS from contacts index.html  r=jmcf
Merge pull request #12249 from reubenmorais/contacts-customization

Bug 891723 - Implement preloaded contacts customization by SIM
Bug 918743 - xfail test_cards_view_with_three_apps due to bug 915138. r=atriff
Bug 918744 - xfail test_gallery_edit_photo due to causing Gallery app to crash. r=alint
Bug 918755 - Unxfail camera tests due to bug 913418 was fixed. r=zcampbell r=atrif
Bug 918727 - Update locator for video tests. r=zcampbell r=fstrugariu
Bug 917525 - Unxfail test_clock_turn_on_off_alarm.py r=bebe