-Translation text will change automatically for in-game buttons, labels, poups when translation is changed.

-Added a NOTIFICATION_TRANSLATION_CHANGED for controls that need custom code
-Sorry, editor will not update automatically because it uses a different translatio method.

core/os/main_loop.h

@@ -54,6 +54,7 @@ public:
 		NOTIFICATION_WM_QUIT_REQUEST = 7,
 		NOTIFICATION_WM_UNFOCUS_REQUEST = 8,
 		NOTIFICATION_OS_MEMORY_WARNING = 9,
+		NOTIFICATION_TRANSLATION_CHANGED = 10,
 	};
 
 	virtual void input_event( const InputEvent& p_event );

core/translation.cpp

@@ -939,6 +939,10 @@ void TranslationServer::set_locale(const String& p_locale) {
 	else {
 		locale=univ_locale;
 	}
+
+	if (OS::get_singleton()->get_main_loop()) {
+		OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_TRANSLATION_CHANGED);
+	}
 }
 
 String TranslationServer::get_locale() const {