Refactored Activities Web Api and client routing.
Seed entity change.
Refactored Activity edit and other stuff in Activities.  Preparing
to add KnockoutValidation to Activity Edit page.
Code Review 4/5/2013 Part 1 - Non-Domain
Code Review 4/5/2013 changes - Part 2 Domain
Code Review 4/5/2013 Changes - Part 3 ReSharper
Code Review 4/9/2013 changes.
Code Review 4/9/2013 changes.