-implement create chat group

src/app/pages/chat/group-messages/group-contacts/group-contacts.page.html

@@ -8,7 +8,7 @@
         <div class="div-title">
           <ion-label class="title">Contactos</ion-label>
         </div>
-        <app-btn-seguinte (click)="groupMessages()"></app-btn-seguinte>
+        <app-btn-seguinte *ngIf="groupName" (click)="createGroup()"></app-btn-seguinte>
       </div>
     </div>
   </ion-toolbar>
@@ -34,7 +34,7 @@
       </div>
 
       <div *virtualItem="let user" class="item-checkbox">
-        <ion-checkbox color="primary"></ion-checkbox>
+        <ion-checkbox (ionChange)="selectedContact(user)" color="primary"></ion-checkbox>
          <p>{{user.name}}</p>
         <ion-icon name="ellipse"></ion-icon>
       </div>