Add the nuget packages folder to the solution. Makes it easier for newbie's
Add VS 2012 generated nuget files.
Removed a reference from jquery 1.7.1 and replaced it with 1.9.1. Figured it can't be bad to use the latest edition.
Changed a variable in javascript to make it easier to understand, within the MVC 4 / WebApi context.
Applied VS 2012 source formatting to the razor view. Ctrl+k, Ctrl+d
Added logic to confirm a destination folder exists for files uploaded to the server.
Updated some of the variables names for code clarity.
Add some comments to the code to explain what is going on. Based on debugging step through.
Added a route to match the javascript  \scripts\script.js line 30 url reference to url: "/api/uploading", which didn't seem to exist (suspect typo).
Removed redundant entity framework reference. Updated from framework 4 to 4.5.