Run migrations in the context of each engine

Having to copy migrations into the main app totally sucks. This adds engine migrations to the main apps migration path. I had to copy timesstamps so migrations don't get run twice

http://pivotallabs.com/leave-your-migrations-in-your-rails-engines/
Migration was failing because Post no longer exists
Update schemas
Merge branch 'unify-migrations'
Fix rss feed
Dont redirect blog rss

This makes /blog.rss?tagged=podcast work properly
add ETA as a featured case study on work page
style ETA case study page
add case study-- url may need to change when publicly available
links to sites now open in own tab
swap out eta photos
new youtube link
updated copy
Merge branch 'eta-casestudy'