Some updates

Well this week I didn't get a whole lot done, but I did get some significant things fixed.  One being a performance issue where the scene was laggy with it it being empty, and a couple of input problems were fixed.  However, I also started working a new resource management system.  I ditched the previous content browser window and swapped my level list window in the AUI with a resource list.  This is set up like Game Maker where there are core folders (Models, Levels, Textures) and each of those core folders can only hold the resource type that they denote.  So the Models folder can only hold Models, etc.  I have basic importing working, but I'm still in the early stages of this addition.