Add "new-group" and "contacts" pages

- Style new group page
- Improve style in chat page

src/app/pages/chat/chat-routing.module.ts

@@ -14,6 +14,10 @@ const routes: Routes = [
   },
   {
     path: 'newchat',
+    loadChildren: () => import('./newchat/newchat.module').then( m => m.NewchatPageModule)
+  },
+  {
+    path: 'new-group',
     loadChildren: () => import('./new-group/new-group.module').then( m => m.NewGroupPageModule)
   }