Merge pull request #11668 from pivanov/bug-907818

Bug 907818 - [First Time Experience] [HD] Grey background blurry r=samjoch
Merge pull request #11538 from pivanov/bug-905134

Bug 905134 - [HD][Settings] Call waiting warning icon in the wrong location r=samjoch
Bug 907631 - [contacts] use mocks helper and proper mocks in vcard tests r=arcturus
Bug 907680 - [HD][Settings] System Update "Install Now" button should be blue not red