UX: move padding to upper bar to avoid ugly shadow cutoff, add star to duplicate entry of favourite language

src/UI/AllThemesGui.svelte

@@ -162,7 +162,7 @@
   <div class="flex w-screen flex-col p-2 sm:p-4">
   <InsetSpacer height={AndroidPolyfill.getInsetSizes().top}/>
     <!-- Top menu bar -->
-    <div class="flex w-full justify-between overflow-hidden">
+    <div class="flex w-full justify-between overflow-hidden pb-4">
       <button on:click={() => guistate.pageStates.menu.set(true)} class="m-0 rounded-full p-2">
         <MenuIcon class="h-6 w-6 cursor-pointer" />
       </button>
@@ -176,7 +176,7 @@
     </div>
 
     <!-- Introduction pane -->
-    <div class="mt-4 flex overflow-hidden break-words">
+    <div class="flex overflow-hidden break-words">
       <div class="m-3 hidden flex-none md:block">
         <Logo alt="MapComplete Logo" class="h-12 w-12 sm:h-24 sm:w-24" />
       </div>

src/UI/InputElement/LanguagePicker.svelte

@@ -78,6 +78,9 @@
               ({language})
             {/if}
           {/if}
+          {#if $preferredLanguages.indexOf(language) >= 0}
+            ⭐
+          {/if}
         </option>
       {/each}
     </Dropdown>