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/util/action_stack.cpp

@@ -26,7 +26,7 @@ ActionStack::~ActionStack() {
 	FOR_EACH(a, redo_actions) delete a;
 }
 
-void ActionStack::add(Action* action, bool allow_merge) {
+void ActionStack::addAction(Action* action, bool allow_merge) {
 	if (!action) return; // no action
 	action->perform(false); // TODO: delete action if perform throws
 	tellListeners(*action, false);