Adding a reconnect feature in case first Pusher request fails

Now, if the first pusher request fails, a waiting message will be displayed and the application will reconnect when the pusher comes back alive or the network connection is established again.

front/src/Components/UI/ErrorDialog.svelte

@@ -1,8 +1,8 @@
 <script lang="ts">
-import {errorStore} from "../../Stores/ErrorStore";
+import {errorStore, hasClosableMessagesInErrorStore} from "../../Stores/ErrorStore";
 
 function close(): boolean {
-    errorStore.clearMessages();
+    errorStore.clearClosableMessages();
     return false;
 }
 
@@ -12,12 +12,14 @@ function close(): boolean {
     <p class="nes-text is-error title">Error</p>
     <div class="body">
     {#each $errorStore as error}
-    <p>{error}</p>
+    <p>{error.message}</p>
     {/each}
     </div>
+    {#if $hasClosableMessagesInErrorStore}
     <div class="button-bar">
         <button class="nes-btn is-error" on:click={close}>Close</button>
     </div>
+    {/if}
 </div>
 
 <style lang="scss">