Basic support for inline form sets
Merge remote-tracking branch 'origin/master' into inline-formsets
Merge remote-tracking branch 'origin/master' into inline-formsets

Conflicts:
	djadmin2/templates/admin2/bootstrap/model_edit_form.html
Merge remote-tracking branch 'origin/develop' into inline-formsets
Merge remote-tracking branch 'origin/develop' into inline-formsets

Conflicts:
	djadmin2/templates/admin2/bootstrap/model_add_form.html
	djadmin2/templates/admin2/bootstrap/model_edit_form.html
	djadmin2/views.py
Improve the rendering of inline form sets
Fix broken tests
Remove unused Admin2Form class.
Remove stray closing tag.
Add messages to base.html
Add delete_selected action
Handle actions by POSTing to ModelListView
Adding to the reference
Merge branch 'inline-formsets' of git://github.com/AndrewIngram/django-admin2 into AndrewIngram-inline-formsets
Update django.contrib.admin reference file to provide reference for this pull request
Add django-extra-views to dependencies to provide formset controls for contributors
Merge pull request #132 from audreyr/cruft-cleanup

Remove unused Admin2Form class.
Move mixins to their own directory so the apiviews aren't directly importing from views
Implementing a modelform_factory that takes care of converting all widgets on the modelform to floppyform widgets if possible.
Using own modelform_factory to produce forms that are using floppyforms widgets. That allows better customization in the frontend.