Do not break site when it is not installed.
recent jQuery compatibility.
Do not need to install collective.inviting.
gitignore
Rewrite collective.maildigest api so we don't deal with
collective.subscribe api outside of main utility.
Use plone.api.
Coding style
Added ui for monthly email.
More generic management of delays.
Added move activity notified when we cut/paste content.
Copied contents notifies add activity.