Merge pull request #10968 from huchengtw-moz/camera/Bug_881664_camera_pick_pitfall

Bug 881664 - Camera 'pick' pitfall when there is no sdcard. r=daleharvey(cherry picked from commit cdf71136ae6233cb790e9f9be16ae456726e38c1)

Conflicts:
	apps/camera/index.html
	apps/camera/style/camera.css