[#2] Correction of popup color.

src/main/ts/src/app/posts/create-update/create-update-post.component.ts

@@ -159,7 +159,7 @@ export class CreateUpdatePostComponent implements OnInit {
 
 			if (this.model.key) {
 				this.createUpdatePostService.updatePost(this.model).subscribe(post => {
-					NotificationsComponent.error('Modification enregistrée');
+					NotificationsComponent.success('Modification enregistrée');
 				});
 			} else {
 				this.createUpdatePostService.addPost(this.model).subscribe(post => {