Merge pull request #23 from goArchy/master

Add WorkUnits tab to project and client page.
Remove hilarious illegitimate controller
Remove feature that didn't really test anything...
Order work units by created_at desc
Apply quite a few rails_best_practices updates

- remove whitespace
- add missing indices
- apply a lot of route restrictions rails best practices suggested
Remove 1.8 mode compatibility from xrono.  It's gone in Rails4, let's stop holding ourselves back.
Fix a ton of deprecation warnings
Remove yajl ruby
Fix a few more deprecation warnings
Upgrade to rails 3.2.8
Remove rcov
Remove some unused helpers, and try to fix an rbx issue
Add back work units index path, oops.
Don't show every work unit on clients#show :facepalm:
Extract label_type_for method
Move class methods to top of Client
Remove useless comment from Comment class
Remove uesless comments from Ticket
Move workunit finders to their own module
Move build_week_hash_for to the only controller that uses it