This is a work-in-progress and is mostly working like I want, but will require
some refactoring to make it even more useful and less complex.

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.

* Strip leading group name from repositories page.
* Put topbars on all pages.
* Properly sort repositories in all locations.
* White Gitblit logo.

Reorganization of resources. Dropped most hard-coded webapp
configuration in favor of common web.xml file. Still contemplating
configuring git servlet from web.xml too.

Settings access has been abstracted and the way is becoming clear to
offer a WAR build in addition to the integrated server stack.  Util
methods moved around.

This seems to improve page loading times.