working video recorder

Record a video and save it on the phone in folder ’/glaucoma’. To fix:
video is wrong orientated.
added a simple dot engine and a view that shows dots
refactoring, added Toast that shows the results
set VisionFieldActivity to landscape, added more realistic points to test, volume button to register point
refactoring
Merge branch 'vision_field' of https://github.com/jonasberglund/skrubb_glaucoma into vision_field