WIP Havok 1.2

This is a big update for havok. Notable changes include:

* New tree widget
* Support for simpler declarative widget markup, including custom tags, and better use of html 5 sematic tags
* New parser. Lighter than the standard dojo parser.
* Api documentation added to the docs pages
* Alternate zoop style added to the docs pages
* Simpler havok bootstrapping
* Experimental server side templating support
* Removal of php from the docs building process - only need node.js now