Fixed the markdown preview on Edit.cshtml, added apply pretty print butt...

[martijnburgers]

• updated the showdown library to 0.3.1 (source: https://github.com/coreyti/showdown)

• added apply pretty print button to Edit (post) view. I would prefer to do this near real-time like on Stack Overflow but don't have the time at the moment, will check this out later.

• In order to get the apply pretty print button to work I needed to include a JavaScript resource in the view. I wanted to regulate this in some way for all the views. I ended up in the following choices:

  Scripts for the views are located in ~\Scripts\Views<Action/View>.js
  Scripts for the views inside an area are located in ~\Areas\Scripts\Views<Action/View>.js (i.e ~\Areas\Admin\Scripts\Views\WikiAdmin\Edit.js)
  Scripts inside the above location are automatically added during Application_Start
  Via App_Start > BundleConfig > ViewBundleRegistrar.RegisterViewBundles(bundles);
  Via AreaRegistration.RegisterAllAreas() > AdminAreaRegistration.RegisterArea(AreaRegistrationContext context) > BundleConfig.RegisterBundles(BundleTable.Bundles , context)
  So each area has it's own BundleConfig and RouteConfig.
  Created extension method string GetViewBundlePath(this WebViewPage view). This can be used inside the view to render the view specific script like so:

(example Edit.cshtml):

@section Scripts{
@Scripts.Render(this.GetViewBundlePath())
}