Updated a number of libraries

Apparently the latest version of WebGrease sort of kills any CSS
minification using it as WebGreaseConfiguration class is internal and
yet required by the CSS minifier. Luckily I use YUI as the default
minifier... Also the bundling code switched to using BundleFile objects
(which are really just wrappers around VirtualFile objects). There is no
documentation on this class that I can find so it took some random
testing to get the minification code to work after updating the library.
I would not be surprised if there are some bugs...

Also fixed an issue if an error is thrown. Before the system would throw
up a bunch of random characters (basically the compressed error page).
If you use the Batman.MVC.BaseClasses.HttpApplicationBase class for your
Global.asax file, it will automatically fix this issue for you by
disabling the compression.

Libraries updated: Glimpse, Iesi.Collections,
Microsoft.AspNet.Web.Optimization, ServiceStack.Text, WebActivator,
WebGrease, Antlr3, YUI, also Newtonsoft.Json was added. Even though I
try not to require unnecessary libraries, WebGrease now requires it.