don't set first day of week during default content creation; plone.app.event will take care of this
removed backwards compatibility stub to ATReferenceBrowserWidget for Plone 5
test if ATContentTypes is in quickinstaller. it actually should, since it fell out of automatically installed products of CMFPlone. and, i guess i have to buy cake for all :)
conditionally test quickinstallability for Plone 4.3 and Plone 5
Move atcontent type views in their product for Plone5
Don't throw an ugly traceback if view is called on a non topic
Update CHANGES.txt
update CHANGES.txt
Merge remote-tracking branch 'origin/master' into plip-13770-portal-tools-removal
fix imports