Final preparations for extended UI patches

- Reduced inventory UI height by 8 pixels and moved all Done buttons down
- Renamed all extra FRM files
- Added checks that all required FRMs exist before applying patch
- Add final FRM files (EN versions)
- Minor refactoring

artifacts/ddraw.ini

@@ -134,12 +134,12 @@ WorldMapTravelMarkers=0
 WorldMapTerrainInfo=0
 
 ;Set to 1 to enable tall trade/barter window with 4 item slots per table instead of 3
-;Requires the high-res patch mode and new barter_239.frm and trade_238.frm files in art\intrface\ (included in sfall.dat)
-;The resolution of the hi-res patch must be set to at least 640x528
+;Requires the high-res mode with resolution of at least 640x528
+;Requires new frm files in art\intrface\: barter_e.frm (640x239), trade_e.frm (640x238)  (included in sfall.dat)
 ExpandedBarter=0
 
 ;Set to 1 to enable tall inventory/loot/item select windows with 8 vertical slots instead of 6
-;Requires new frms: invbox_473.frm, loot_472.frm and use_472.frm files in art\intrface\ (included in sfall.dat) to display correctly
+;Requires new frm files in art\intrface\: invbox_e.frm (499x467), loot_e.frm (537x464) and use_e.frm (292x464) files (included in sfall.dat)
 ExpandedInventory=0
 
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