Merge pull request #10246 from mozsquib/camera-pick-ux

Bug 870726 - [Camera] Confirmation of successful Image pick for email attachments and wallpaper(cherry picked from commit 3434257da95043dbfa930e1747325b4e34c02162)

Conflicts:
	apps/camera/index.html
Merge pull request #10343 from daleharvey/882107

Bug 882107 - Dont call missing restartPreview. r=julienw(cherry picked from commit d6d6fb4e5147d0a0b62d67e5e898e2bacbf86771)