Editor Fixes (by Buggler)

- Fixed item deletion from item pool when no item selected
- Added Shift, Ctrl, Ctrl+Shift hotkeys to item scrolling click 
- Fixed Rdn button not depressed upon clicking other item buttons
- Fixed B, R, S text not shown for random items

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@5949 3b4a5df2-a311-0410-b5c6-a8a6f20db521

Editor/editscreen.cpp

@@ -181,6 +181,7 @@ BOOLEAN EditModeInit( void );
 BOOLEAN EditModeShutdown( void );
 void EnsureStatusOfEditorButtons();
 
+extern INT8 gbEditingMode;
 
 extern BOOLEAN fAllDone;
 extern DisplayList Selection;
@@ -1464,7 +1465,7 @@ void HandleKeyboardShortcuts( )
 					break;
 
 				case DEL:
-					if( iCurrentTaskbar == TASK_ITEMS )
+					if( iCurrentTaskbar == TASK_ITEMS && gbEditingMode != 0 ) //gbEditingMode != EDITING_NOTHING
 						DeleteSelectedItem();
 					else if( gsSelectedMercID != -1 )
 					{