New tables for pending and active hookups
Pivotal stories 75025008, 75025492
Added hookups view, hookups controller with index service, several event methods to distinguish
between active, pending, and expired events.  Several helper formatting functions for table fields.

fixing up hangout related event code after rebase.

updated tests after rebase to match the new 'event' schema

active hookups based on hangouts, not events

Add tests for live? status for repeating tests.
Improved tests for non-repeating events (e.g. hookups)
more test improvements in response to Bryan's comments
correct hookup? test for hangout model to use the hangout's category field
improve table content rspec tests to use "within".  Remove comment, changed {} to do end.
Merge pull request #481 from jon-engelbert/hookup_tables

hookup_manager stage one:  New tables for pending and active hookups (pair programming events).  Pivotal #75025008, 75025492