Small improvements in the credits screen

- No longer generate a translatable string for the 'supertuxkart.net' text that is displayed as a nice text for the website button
- Fix #5585

Author: Alayan-stk-2

data/gui/screens/credits.stkgui

@@ -2,19 +2,21 @@
 <stkgui>
     <icon-button id="back" x="1%" y="0" height="9%" icon="gui/icons/back.png"/>
     <div x="0%" y="1%" width="99%" height="fit" layout="vertical-row">
-        <button id="stk-website" height="fit" align="right" text="supertuxkart.net"/>
+        <!-- The text will be set in code to simplify potential updates of the URL
+             and avoid generating a spurious string for translators. -->
+        <button id="stk-website" height="fit" align="right" />
     </div>
 
     <div x="2%" y="2%" width="96%" height="96%" layout="vertical-row" >
         <icon id="logo" align="center" proportion="4" width="100%" icon="gui/icons/logo_slim.png"/>
 
         <div x="0" y="0" width="100%" proportion="1" layout="horizontal-row" >
 
-            <header I18N="Title in credits screen" text="Credits" />
+            <header proportion="2" I18N="Title in credits screen" text="Credits" />
 
-            <spacer proportion="1" />
+            <spacer proportion="5" />
 
-            <button id="donate" width="fit" align="center" text="Donate"/>
+            <button proportion="2" id="donate" width="fit" align="center" text="Donate"/>
 
         </div>
 

src/states_screens/credits.cpp

@@ -28,6 +28,7 @@ using irr::core::stringc;
 #include "guiengine/scalable_font.hpp"
 #include "guiengine/screen.hpp"
 #include "guiengine/widget.hpp"
+#include "guiengine/widgets/button_widget.hpp"
 #include "io/file_manager.hpp"
 #include "online/link_helper.hpp"
 #include "states_screens/state_manager.hpp"
@@ -217,6 +218,11 @@ void CreditsScreen::loadedFromFile()
 void CreditsScreen::init()
 {
     Screen::init();
+
+    GUIEngine::ButtonWidget *link = getWidget<GUIEngine::ButtonWidget>("stk-website");
+    link->setText("supertuxkart.net");
+    onResize(); // Ensure the icon-button is properly sized
+
     reset();
     updateAreaSize();
 }   // init