Bug 999171 - Implement a progress indicator to show progress when the viewfinder has not loaded

Conflicts:
	apps/camera/js/app.js
	apps/camera/js/config/config.js
	apps/camera/js/controllers/controls.js
	apps/camera/test/unit/app_test.js
Merge pull request #18855 from wilsonpage/999171-v1.4

Bug 999171 - Implement a progress indicator to show progress when the