Some fixes

data/ui_scripts/hud_info/__init__.lua

@@ -1,4 +1,4 @@
-if (game:issingleplyer()) then
+if (game:issingleplayer()) then
     return
 end
 

data/ui_scripts/hud_info/hud.lua

@@ -122,6 +122,10 @@ mphud.updateHudVisibility = function(a1, a2)
     local menus = root:AnyActiveMenusInStack()
     local infobar = root.infobar
 
+    if (not infobar) then
+        return
+    end
+
     if (menus) then
         infobar:animateToState("hud_off")
     else

data/ui_scripts/hud_info/settings.lua

@@ -1,5 +1,11 @@
 local pcdisplay = luiglobals.require("LUI.PCDisplay")
 
+game:addlocalizedstring("LUA_MENU_FPS", "FPS Counter")
+game:addlocalizedstring("LUA_MENU_FPS_DESC", "Show FPS Counter")
+
+game:addlocalizedstring("LUA_MENU_LATENCY", "Server Latency")
+game:addlocalizedstring("LUA_MENU_LATENCY_DESC", "Show server latency")
+
 function createdivider(menu, text)
 	local element = LUI.UIElement.new( {
 		leftAnchor = true,
@@ -128,8 +134,8 @@ pcdisplay.CreateOptions = function( menu )
     LUI.Options.CreateOptionButton(
         menu, 
         "cg_infobar_ping", 
-        "Server Latency", 
-        "Show server latency", 
+        "@LUA_MENU_LATENCY", 
+        "@LUA_MENU_LATENCY_DESC", 
         {
             {
                 text = "@LUA_MENU_ENABLED",
@@ -150,8 +156,8 @@ pcdisplay.CreateOptions = function( menu )
     LUI.Options.CreateOptionButton(
         menu, 
         "cg_infobar_fps", 
-        "FPS counter", 
-        "Show FPS counter", 
+        "@LUA_MENU_FPS", 
+        "@LUA_MENU_FPS_DESC", 
         {
             {
                 text = "@LUA_MENU_ENABLED",

src/client/game/ui_scripting/lua/context.cpp

@@ -9,6 +9,7 @@
 #include "../../../component/command.hpp"
 #include "../../../component/updater.hpp"
 #include "../../../component/fps.hpp"
+#include "../../../component/localized_strings.hpp"
 
 #include "component/game_console.hpp"
 #include "component/scheduler.hpp"
@@ -61,6 +62,12 @@ namespace ui_scripting::lua
 				return ::game::environment::is_mp();
 			};
 
+			game_type["addlocalizedstring"] = [](const game&, const std::string& string,
+				const std::string& value)
+			{
+				localized_strings::override(string, value);
+			};
+
 			auto userdata_type = state.new_usertype<userdata>("userdata_");
 
 			userdata_type["new"] = sol::property(
@@ -73,7 +80,6 @@ namespace ui_scripting::lua
 					userdata.set("new", convert({s, value}));
 				}
 			);
-
 			
 			userdata_type["get"] = [](const userdata& userdata, const sol::this_state s,
 				const sol::lua_value& key)