Fix file mode for git.
Merge pull request #212 from alastairs/fix-file-mode

Fix file mode for git.
Re-enabled IIS Express anonymous auth
Upgrade Newtonsoft.Json
Merge pull request #213 from philpursglove/upgrade-newtonsoftjson

Upgrade Newtonsoft.Json
Merge pull request #214 from philpursglove/iis-anon-auth

Re-enabled IIS Express anonymous auth
Upgrade the solution to .NET 4.5.1.

See http://go.microsoft.com/fwlink/?LinkId=235367 for details of the
changes made to the web.config file.
Update timeline for 2014.
Remove commented-out code.
Remove "thanks for attending" well.
Update intro paragraph for 2014.
Small wording improvement.

Make it less wordy.
Update Lanyrd URL
Remove 2013 sponsors.
Update venue information in sidebar.
Update venue/date details in header.
Update timeline with actual dates for 2014.
Update psake to 4.3.1 for .NET 4.5.1 compatibility
Use .NET 4.5.1 in psake build.
Reinstall EntityFramework for .NET 4.5.1.

Some NuGet packages require reinstallation after changing the target
framework from .NET 4.0 to .NET 4.5.1. We get a free upgrade to Entity
Framework 6 as part of this process.

A few source files have had to be updated too: the `EntityState` enum
moved from `System.Data` to `System.Data.Entity` in EF6.