modify css bootstrap3
Merge branch 'dev' of https://github.com/grengojbo/django-fiber into dev
fix bootstrap3 css
modified:   fiber/static/fiber/css/admin.css
modified:   fiber/templates/fiber/menu.html
modified:   fiber/templatetags/fiber_tags.py
modified:   testproject/templates/base.html
modified:   testproject/testproject_db