0.4.0

-Updated to libFilters 1.0r3 (This may fix the error messages on reload)
-Disabled and greyed out the buttons for empty subfilters
-Item filtering for armor should perform better, but I doubt it's 100%
accurate.
-When changing guild banks, your subfilter is now reset to "ALL"
-Fixed a silly bug dealing with changing inventories.
-Cleaned up the code a bit.