Initial modal file

Rewrite Bootstrap Modal to CoffeeScript and update semantics to suite Rolodex
Modal templates converted to HAML
Initial port of Bootstrap modal to Rolodex

Copy Bootstrap modal logic over to Rolodex to keep the APIs the same for now. Convert to coffeescript. Introduce template cache gem. Specs to follow.
Merge pull request #17 from ajself/rolodex_modals

Rolodex modals