Remove twitter bootstrap, render styles to authenticated users only.
Remove twitter bootstrap, fix #75
Add an upgrade step
Add missing cookResources for css_registry
Merge pull request #79 from saily/omit-twitter-bootstrap

Remove twitter bootstrap, fix #75
Mergin pull request alternative-langauges
Merge branch 'master' of https://github.com/plone/plone.app.multilingual
Use correct test layer which pops demostorage after each test teardown
Better test setup for robot tests