Fixed: choice images were generated with the wrong context from invalidate()

Choice thumbnails are now checked to not be 'local' before reading from cache, fixes issue with wrong rarity symbol in the drop down list;
Disabled unimplemented menu items;
Multiple choice items for RENDER_LIST are now zoomed, and positioning is on rotated cards is fixed.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@650 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/set/window.cpp

@@ -397,6 +397,8 @@ void SetWindow::onUpdateUI(wxUpdateUIEvent& ev) {
 		case ID_EDIT_REPLACE   : ev.Enable(current_panel->canReplace());break;
 		// windows
 		case ID_WINDOW_KEYWORDS: ev.Enable(set->game->has_keywords);	break;
+		// help
+		case ID_HELP_INDEX     : ev.Enable(false);						break; // not implemented
 		// other
 		default:
 			// items created by the panel, and cut/copy/paste and find/replace