[#396464] Enabling of RSVP module sets event connector by default, and enabling the date connector will fail because of that.

fixed by ulf1- [#360151] Users can see others complete emailaddress in guest list. Only first part should be visible.
fixed by ulf1- [#360151] anonymous guests can not see their invitation (Access denied).
Updated: Improved messages: Open invitation signup works only for authenticated users. Anonymous users are not permitted.
fixed by ulf1- Host Toolbox/"Export Guest list" visible to non moderators
fixed by ulf1- Guest list shows empty braces for guests that selected more then one "total guests".

Make it possible to access invitation (and delete it) even if node has already been deleted. (rsvp/RID/edit)