Bug 835350 - Bookmarks customization depending on MCC SIM card

reuse getICCSettings pattern from system/js/operator_variant/operator_variant.js

add zfill function to pad leading zeros for mcc/mnc, now always 6 digits

Use DEFAULT_BOOKMARK, DEFAULT_MNC instead of spread strings
Bug 832182: [Communication] Allows second phone call.
fix bug 852820
Merge pull request #8723 from weideng/master

fix bug 852820 r=djf
Merge pull request #8610 from rexboy7/fix-bug832182-2call-unit

Bug 832182: [Communication] Allow second phone call.
Merge pull request #8606 from gasolin/issue-835350

Issue 835350 Customize Browser Bookmark via iccsettings, r=bfrancis
Bug 828751 - Remove innerHTML calls in contacts application
Bug 845487 - Dialer responds to cross-origin messages without verifying the source (exploitable).
Merge pull request #8738 from gtorodelvalle/dialer-bug-845487-cross-origin-exploit-reloaded

Bug 845487 - Dialer responds to cross-origin messages without verifying the source (exploitable) (r=crdlc)
Bug 850250 - [Contacts] Gmail connector should import the contacts just from 'My Contacts' section
Merge pull request #8680 from arcturus/bug-850250

Bug 850250 - [Contacts] Gmail connector should import the contacts just from 'My Contacts' section
Bug 853379 - Update contact activity should allow adding email to existing contact
Merge pull request #8741 from albertopq/issue-853379

Bug 853379 - Update contact activity should allow adding email to existing contact r=arcturus
Bug 848771 - Make Transition from adding number to a contact look seamless
Merge pull request #8718 from comoyo/contacts_textcontent

Bug 828751 - Remove innerHTML calls in contacts application. r=albertopq
Bug 828732 - Showing an error msg when adding to an existing contact and the list is empty

Dialer displaying action menu unless success on the activity
Merge pull request #8720 from albertopq/contacts-activities-headers

Bug 848771 - Make Transition from adding number to a contact look seamless r=arcturus
Merge pull request #8704 from albertopq/add-existing-check

Bug 828732 - Showing an error msg when adding to an existing contact and  the list is empty r=arcturus