This is a massive commit which reorganizes the entire project structure
(although it is still monolithic), removes the Build classes, and
switches to Moxie, a smarter Ant build tookit based on the original
Gitblit Build classes.

The Ant build script will likely require additional fine-tuning, but
this is big step forward.

If this feature is enabled then permitted users can automatically create a
repository when pushing to one that does not yet exist.  Permitted users
are administrators and any user with the CREATE role.

If the pushing account is an administrator, the created repository may be
located in any folder/project space.  This reposiory will inherit the server's
default access restriction and authorization control.  The repository owner
will be the pushing account.

If the pushing account is a regular user with the CREATE role, the repository
can only be located in the account's personal folder (~username/myrepo.git).
This repository will be VIEW restricted and accessible by NAMED users.  The
repository owner will be the pushing account.

The fork mechanism clones the repository , access restrictions, and
other config options.  The app has been updated throughout to handle
personal repositories and to properly display origin/fork links.

In order to fork a repository the user account must have the #fork role,
the origin repository must permit forking, and the user account must
have standard clone permissions to the repository.

Because forking introduces a new user role no existing user accounts can
automatically begin forking a repository.  This is both a pro and a con.

Since the fork has the same access restrictions as the origin repository,
those who can access the origin may also access the fork.  This is intentional
to facilitate integration-manager workflow.  The fork owner does have the
power to completely change the access restrictions of his/her fork.

This is an in-progress feature to offer an interface for grouped
repositories.  This may help installations with large numbers of
repositories stay organized.  It also will be part of a future,
more advanced security model.