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/data/field/choice.hpp

@@ -130,9 +130,9 @@ enum ChoiceRenderStyle
 };
 
 enum ThumbnailStatus
-{	THUMB_NOT_MADE
-,	THUMB_OK
-,	THUMB_CHANGED
+{	THUMB_NOT_MADE // there is no image
+,	THUMB_OK       // image is ok
+,	THUMB_CHANGED  // there is an image, but it may need to be updated
 };
 
 /// The Style for a ChoiceField
@@ -165,7 +165,7 @@ class ChoiceStyle : public Style {
 	
 	virtual int  update(Context&);
 	virtual void initDependencies(Context&, const Dependency&) const;
-	virtual void invalidate(Context&);
+	virtual void invalidate();
 	
   private:
 	DECLARE_REFLECTION();