* Made huge changes to thememan to hopefully increase the effiecency
of layouts.
* Added bootstrap theme. Not anywhere near feature complete.
* Started modifying the way layouts handle embedded elements inside
elements, not near completion.
Added another doc dealing with Themes
Fixed up bootstrap a bit more.
* Added toggle for BreadUserSystem to show in navbar or not.
* Sidebar links and navbar links work in Bootstrap.
* Bootstrap can recognise links with a 'title' boolean that makes the
link a navbar title.
Added BreadXML and an example of how to use it with bootstrap.