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

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. 
OK, I changed the autoformatting options.