Make subsections and skillsets sortable.
Allow for sorting of skillsets.

- Add jquery-ui for sortable functionality
- Add coffeescript to interact with skillset section
- Add ids and classes for skillsets
- Add skillset controller for ajax call
- Clean up routes and add route for skillset sorting
Use success instead of committed.
Merge pull request #1 from rolme/sort-skillsets

Sort skillsets
Removing unneeded factory files.
Moved pry out of test as it is only needed for development.
Add backend functionality for sorting skills.

- Associate Skill to Skillset
- Add controller for sorting Skill
- Add route for SkillController#sort
- Update view to use Skillset <-> Skill association
Remove specs for factories as this is no longer needed.