Changes from Pakrat v0.9 to v0.92

Renamed "Auto" button to "Scan" button
Added "Auto" button that performs a fully-automatic scan and add
Renamed "Check" button to "Reference"
Scan window now closes when BSP is saved

Changes from Pakrat v0.8 to v0.9

Better handling of model files in list and file chooser
Added viewing of vtf file bitmaps
Now can view hexdump or textdump of unknown file types
Current directories for add & load operations now persistantly remembered
Added drag-and-drop of files/directories into list
Added ability to add whole directories at once (recursive)
Added auto-scan of all files referenced in map geometry & entites
File view and delete buttons now work with multi-selection
Added check button to scan window, shows trace of references to file
Added keyboard shortcuts
Removed "texture" menu item (function now integrated into auto scan)
Model files now show summary properties when viewed