Refactor categories

Refactor categories to be callable from profile editor activity.  Modify calling parameters of Session to just use create().  Caching all categories on application startup (not used by anyone yet)
Reorganize profile code

Add profile package.
Merge branch 'master' of https://github.com/rotinom/CSE-5324

Conflicts:
	MyTutor/src/com/mytutor/MainActivity.java
re-enable toolbar

I need it for my profile work.
Eclipse is acting weird.  Think I have the stuff mostly serviceable.