Found the source of the growing style file bug (and fixed it)

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@645 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/settings.hpp

@@ -171,6 +171,8 @@ class Settings {
   private:
 	/// Name of the settings file
 	String settingsFile();
+	/// Clear settings before reading them
+	void clear();
 	
 	DECLARE_REFLECTION();
 };