Update gems

Devise had a CVE posted and this version addresses that problem

Passenger will be helpful for local server development since its also in
production

Postmark updated their gem and yanked the old one
Add zurb foundation
Remove outdated modernizr
Cleanup Javascript and install Foundation
Rename Modernizr
Remove modernizr from app asset precompilation
Update layout for foundation
Setup modernizr for the asset precompilation
Customize and install Foundation