hookup_manager stage one:  New tables for pending and active hookups (pair programming events)

relates to pivotal stories "display list of pending events in a table", 75025008, and "display list of active/live hookups (i.e. hookups with live hangouts) in a separate table",75025492. 
I see now where you've defined active? in the model.  To do full stack testing you need to figure out what the database looks like for an active event, I suppose.