add sites.py tests

Conflicts:
	exadmin/tests/__init__.py
add model testing file
add batch change models data feature, not finish.
add ModelFormUtilView init_request default arg
change ``model_admin_urlname`` to ``model_admin_url`` and ``admin_urlname`` to ``get_admin_url``
unprint add view permission info.
remove popup
change ``admin_class`` to ``option_class``
exadmin.views import More View Classes, and add ``__all__`` attr.
add model admin view context.
organize views code imports.
templates use new context var and add delete btn into detail page.
upgrade bootstrap to 2.3
fix navbar input-append and input-prepend margin
add change password feature.
add top account menu, for change password right now.
delete popup tags.
change self password need old password.
add Sentry for demo app.
add raven depend