Quickfix for twitter absent emails.
Drop database and recreate/migrate. Refactored devise for user and views.
Added models to admin and cleaned up views some more.
Fixed tests for public namespace, removed edit abilities.
Merge pull request #29 from CabForward/refactor-user-model-and-views

Tests, controllers, models and views all refactored.
Updated abilities and user validation.
Adjustment to ability, deny non auth'd user to create anything. Touch up forms.
Minor bugfixes to controllers and routes. Removed User from public domain.
Added custom validation for name vs twitter handle for speakers. Modified public controllers. Clean up views.
Remove h1 link at top of navigation partial.
Merge pull request #30 from CabForward/speaker-migrations-validations

Added custom validation for name vs twitter handle for speakers. Modifie...
Add vote link to topics partial
Merge master, fix conflicts.
Voting logic, ajax, frontend.