Added email.css to precompile list
Use _ for importing bootstrap css
Warn if seeding production to turn off tweeting
Updated deps
Try returning Comment link if Post isn't found

Relates to gh-83
Added email.css to the precompile list
Don't try for Comment if it's a Post--that was a bad fix

Closes gh-83
Merge branch 'master' into rspec
Added #edit specs
Added #update specs
Added last of post controller specs