Merge branch 'release/0.7' into develop
Add Work Log Measurements in One Hour Increments
Add Work Log Measurements in Fifteen-Minute Increments
Add /lib/*.rb to Guardfile Watch List
Remove 'Hours' Field From Work Log Form
Add After_Actions to Sum Up Hours
Implement Task Time Sumnation Empty Set Case

* Have .total_hours be 0 if the current task has no associated work logs
Implement Task Time Sumnation Non-Empty Set Case

* Have .total_hours be the sum of all associated work log hours.  For
  example, given:

  Work Log 1: 5 hours
  Work Log 2: 3 hours, 15 minutes

  .total_hours should output 8.25
Add Total Task Time Sumnation to Task Show Pages
Merge branch 'feature/task_time_sumnation' into develop
Update Version Number
Merge branch 'release/0.8'