Remove camera

Created by: pR0Ps

Removes the in-app camera library, layouts, icons, and supporting code. Also adds a check so that devices without cameras won't show the option to attach an image from the camera.

I propose we take out the in-app quick camera. It adds another permission, a lot of code, and doesn't really add any functionality since the user can just attach a picture from the camera by tapping the attachment button and choosing "Camera".

Some code is in the currently-published build, but it's not activated so users wouldn't know if we remove it as this point.

Thoughts?