changes to handing of digging (non backwards-compatible i guess)

src/guiPauseMenu.cpp

@@ -106,6 +106,7 @@ void GUIPauseMenu::regenerateGui(v2u32 screensize)
 		L"- R: Toggle viewing all loaded chunks\n"
 		L"- I: Inventory menu\n"
 		L"- ESC: This menu\n"
+		L"- T: Chat\n"
 		L"\n"
 		L"To generate a new map, remove the map directory.\n";
 		Environment->addStaticText(text, rect, false, true, this, 258);