Fix the Rspec tests

Green lights. Go!
Create and pass all the tests around the posting process
Use the keyword selection thing when the user posts an article
Add beginning of email things
Rip out some devise stuff from the Gem
Add premailer template and basic welcome email
Fix devise mappings for user#new and user#edit
Add a way for users to complete the onboarding whenever
Fix blue hover buttons
Synchronously send email upon registration

We should make this a delayed job, later.