Renamed pastebin > dpaste.

This is a way simpler project structure, its also backwards compatible. Its a huge cleanup and should make further development and also 3rd party integration much easier.
More project restructuring to make the project look more like a Django 1.5 project.
Added some example settings.
Splittet urlpatterns into several files. Will make it much easier to implement this as an app into an existing project.
Little code cleanup.
Moved all templates into the dpaste subdirectory. 

This will make integration into projects again easier, it wont overwrite existing templates. Those projects only need to overwrite dpaste/base.html to integrate it into their project layout.
Custom error views to load dpaste error templates.