staff can now see user rsvps
clarified heroku section
clarified heroku section
Changed the submission table and the submission form to support creating an event from a submission.

In form.html, changed the "submit event" button to read "update event"
if the submission is being modified rather than created. Also added a
Create button to create an event from this submission.

In the Submission class, added the attribute event_created to indicate
if an Event was created from this Submission.
Tag nav hides & shows itself.
Tag nav hides and shows itself.
Improved the design of the masthead.
UI
Added badges for RSVP and age to each listing.
Improved appearance of login.html.
Deleted obsolete image files.
Improved submission form.
Deleted unused image files.
Separated nav hide and show into its own js file.
Removed .project file and added '.project' to .gitignore
Added ptrax.css to .gitignore
Saved work
Fixed merge conflicts
Ignoring log files
Manual merge from matt/master to kamni/master