Add i18n completion tool.

frontend/src/app/pages/my-publications/my-publications.component.html

@@ -1,19 +1,20 @@
-<h1>Your publications</h1>
+<h1 i18n>Your publications</h1>
 
 <a [routerLink]="['/publications/new']"
     class="new-publication"
     matTooltip="Add a new publication"
-    matTooltipPosition="left">
+    matTooltipPosition="left"
+    i18n-matTooltip>
     +
 </a>
 
 @if ((isLoading$ | async) === true) {
-    <h2>Publication loading...</h2>
+    <h2 i18n>Publication loading...</h2>
     <mat-spinner></mat-spinner>
 } @else {
     @if ((isLoaded$ | async) === true) {
         <app-publication-list [publications$]="publications$"></app-publication-list>
     } @else {
-        <h2>There is no any publication...</h2>
+        <h2 i18n>There is no any publication...</h2>
     }
 }

frontend/src/app/pages/my-publications/my-publications.service.ts

@@ -40,8 +40,8 @@ export class MyPublicationsService {
                     this.publicationsSubject.next(publications);
                 })
                 .catch(error => {
-                    const errorMessage = 'An error occurred while retrieving your publications...';
-                    this.snackBar.open(errorMessage);
+                    const errorMessage = $localize`An error occurred while retrieving your publications...`;
+                    this.snackBar.open(errorMessage, $localize`Close`, { duration: 5000 });
                     console.error(errorMessage, error);
                 })
                 .finally(() => {
@@ -50,7 +50,7 @@ export class MyPublicationsService {
                 });
         } else {
             this.authenticationService.unauthenticate();
-            this.snackBar.open('You are unauthenticated. Please, log-in first.', 'Close', { duration: 5000 });
+            this.snackBar.open($localize`You are unauthenticated. Please, log-in first.`, $localize`Close`, { duration: 5000 });
             this.router.navigate(['/login']);
         }
     }