Uncommented Account controller
Added Mongo Identity provider

Implemented MVC5 style identity, using Mongo identity provider.  Fixes
#245
Removed commented out code
Manage login link
Add newest conference to footers #227
Add newest conference to footers #227
Merge pull request #246 from tekconf/NewestConfFooters

Add "Newest Conferences" to all other footers besides home page
Merge pull request #245 from tekconf/Mvc5Auth

Implement Login/Authentication in MVC5 style