Adding capability to copy a project to a new one.  Fixes #3
Fixing a bug that prevents deleting projects. Fixes #7
Fixes #10
Fixes #11

Issue was because was searching for a category with an owner, which is a field that doesn't exist.
Fixes #12

Added the sorting values to the model Meta classes.
Starts #4 : still needs to have some more testing.
Fixed #13 by adding some additional parameters to the ForeignKeys in the record for the location and category fields.
Found some more bugs in #4

Edit Location form was still pointing to the project form
Fixing the title of the of the location form to be location instead of edit project
Removing some unneeded overrides from the location manipulation views.
Added a menu item to get to the location management.
Updated the list of locations to be able to edit and delete from the list of locations.
Removed the timetracking/projects url in order to point towards the project list from timetracking/
Merge pull request #22 from rerobins/rerobins_dev

Pull in feature increases and bug fixes from the development branch.