Implemented workflow for projects.

Adds accepted status.

Workflow is determined from status, but managed by buttons (which replace the status dropdown).

new -> in progress -> complete -> delivered -> accepted
Added colors to the workflow buttons.

The colors match the color of the status the project will move to. For example, the complete button is colored as the complete status color.
Moved button code to partial for cleaner code
Fixed some aesthetics of the project panel with the button
More panel aesthetics.

Closes #72
Reload page on ajax success
Merge pull request #74 from matthew-parlette/project_workflow

Project workflow