adds link (not working yet) to add hours from the entry#show page
changed my mind; will add @note column to work_hours instead of linking
into notes
time to refactor the stories - work_hours relationship... so it works
adds billable hours functionality

- add hours worked on project
- column in stories is used for caching the total hours
- see work hours breakdown from stories#show

still more work to tidy things up, but basic functionality is there
adds ajax for story#work_hours
need to update cached total hours after each mutable action (edit,
delete)
adds ability to record hours worked on a story

- associated hours worked are automatically cached in story
  @hours_worked
- add notes to section of work hours to help remember what was being
  worked on
adds edit/update and page break for pdf report

- edit/update still needs some work; post update not apparent
  after controller action

- pdf report need to do checks based on accomplishments and then
  on each individual note and related story note.  Otherwise
  there is some very strange wrapping between pages.