Finish first draft of Delete Role forms

Still needs to be tied to backend code from yesterday.
Restyled User Story table
Clean up code and set form actions
Continue work on Delete Role forms

Appearance is coming along nicely, however it still isn't showing errors
for the individual assignment section.
Rephrase Delete Role form button text
Fix issues causing form errors not to display
Modify stories fixture to add variety to priority
Tie Delete Role forms to backend

Individual forms still not working.
Complete Delete Role forms

All 3 forms on the Delete Role page now function properly.
TODO: Additional unit tests

closes #4
Add ability for users to remove existing roles

3 Options:
1) Delete role and associated stories
2) Delete role; reassociate all relevant stories to another role
3) Delete role; reassociate individual stories to other roles

TODO: Add additional unit tests

closes #4