Added new pages and features to hVite.
Made events editable.
Added form to send emails to those invited.
Added RSVP system.
Added emailing and fixed RSVPing.

hVite will now send emails. Dumping the data for these emails suggests that they are made correctly. However, this has not been put through a live test (yet). Users can now RSVP to events. They are given links to do so in emails they receive as invitations. Entries in hvite_rsvp are added for all users when events are created. No functionality exists for adding more users to an event yet; however, events can be modified.
Merge branch 'master' of https://github.com/regdoug/rithonors-hstatus

Conflicts:
	hdata/hvite/hvite.module