added base script manager, for providing abilian commands from core and extensions modules
use flask >0.10, flask-script > 0.6
added assets management + base assets, base template
ensure relative import
added font-awesome 3.2.1
assets css importer: process included file through cssrewriter
assets: added manifest file as it is required by management commands (build, clean...)
default (and ugly) index page
minor doc fix
added register_jinja_loaders

this allows 3rd party apps, plugins.. to carry their templates, or override standard ones
register abilian.css
fix assets filter: cssimporter
set apple multitouch icon, added full abilian logo
base.html: added jinja blocks, added navbar
fix css filters, fix assets path for core assets
added basic 403,404,500 pages, with view helper in debug mode