Image uploaders more robust and for both person and company

Now the image uploaders will work in either older browsers or with no-javascript.
User can choose his profile_type between _personal_ and _company_ and will have different image upload options.
User edit is almost done, just missing Address with map.

Prepared some stuff to start designing the User#projects and User#backer pages.

Worked: 2:40h
Total: 23:05h