* CouldNotFindEntryException.cs: - Added a custom exception when
  nothing is found in the database

* HomeController.cs: - Fixed spelling type in log in page

* Index.cshtml: - Updated login view to be more stylistic

* _Layout.cshtml: - added fancy "button" (really just a link)

* DatabaseWrapper.cs: - added a method to test if a user is present

* PodTracker.Models.csproj: