Delete scaffolding crud and move duration remaining logic to model
Re-implement pomodoro controller and views

Add inherited resources and re-implement pomodoro controller and view
for a single page layout.
Implement pomodoro currently running method
New pomodoros will not be created while an existing pomodoro is running
Fix bug with pomodoros being incorrectly blocked

Pomodoros are now correctly blocked or allowed if there is an existing
timer. Add delayed_job to close up intervals without end datetimes.
Add web process to Procfile
Refactor interval creation and implement cleanup

Add delayed::job and unicorn. Interval creation now handled by a service
object. Implement interval cleanup with DJ.
Implement job deletion and add HireFire
Initial implementation of pause and unpause functionality

Add pause/unpause method to Pomodoro. Implement controller and view
logic to trigger method on any put to a pomodoro.