Bugfixes
#CHANGE: Removed hardcoded ".Contains(':')" checks to determine default content paths. Use ContentProvider.IsDefaultContentPath(..) instead.
#CHANGE: Global Resource save events now use ResourceSaveEventArgs to provide information about "save as" operations as well.
#CHANGE: Disposed Resources are now properly removed from the unsaved resources list immediately.
#FIX: Fixed a bug where ResourceEventArgs misidentified content using an absolute file path as "default content".
#FIX: Fixed a bug where ResourceEventArgs misidentified default or runtime content as directory.
#FIX: Fixed a bug where Project View dragdrop could cause duplicate Resource instances because of accidently used absolute paths.
#FIX: Dropping certain default Materials into a physical location no longer prompts an "external modification" dialog.