Implementing the view as a tableview, this should give us nice functionality for expanding the pickerview (like in calendar)
Cells set up for display without showing pickers
Added time interval conversion to string
Removed extraneous init in IntervalTimer
Added insert and delete code for pickers
ViewController responds to timer finishing
Moved picker into its tablecell
ViewController responds to picker delegate message
Added method for pickercell to determine timeinterval for selection
Added method in Pickercell to configure picker based on a timeinterval
Only show one picker at a time
Changes to GUI on start