Reduce coupling between ValueEditors/Viewers and Set and StyleSheet.

- Adding of actions is done with an addAction function
 - Files are read from
     - getStylePackage for styling stuff (this is stylesheet)
     - getLocalPackage for symbol and image values (this was the set)


git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@970 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/value/package_choice.cpp

@@ -111,7 +111,7 @@ void PackageChoiceValueEditor::determineSize(bool) {
 }
 
 void PackageChoiceValueEditor::change(const String& c) {
-	perform(value_action(card(), valueP(), c));
+	addAction(value_action(valueP(), c));
 }
 
 void PackageChoiceValueEditor::initDropDown() {