UX: disable uploading images for now

src/UI/Image/UploadImage.svelte

@@ -57,7 +57,7 @@
             file,
             "image",
             noBlur,
-            feature
+            feature,
           )
           if (!uploadResult) {
             return
@@ -78,12 +78,19 @@
     }
     errors.setData(errs)
   }
+
+  let maintenanceBusy = true
 </script>
 
 <LoginToggle {state}>
   <LoginButton clss="small w-full" osmConnection={state.osmConnection} slot="not-logged-in">
     <Tr t={Translations.t.image.pleaseLogin} />
   </LoginButton>
+  {#if maintenanceBusy}
+    <div class="alert">
+      Due to maintenance, uploading images is currently not possible. Sorry about this!
+    </div>
+  {:else}
     <div class="my-4 flex flex-col">
       <UploadingImageCounter {state} {tags} />
       {#each $errors as error}
@@ -121,4 +128,5 @@
         <Tr t={t.respectPrivacy} />
       </div>
     </div>
+  {/if}
 </LoginToggle>