style: follow close buttons which are right aligned not left

Author: peterpeterparker

studio/src/app/pages/core/app-signin/app-signin.scss

@@ -6,7 +6,7 @@ app-signin {
     ion-buttons.back {
       position: absolute;
       top: 8px;
-      left: 8px;
+      right: 8px;
     }
   }
 

studio/src/app/pages/core/app-signin/app-signin.tsx

@@ -298,7 +298,7 @@ export class AppSignIn {
             return undefined;
         } else {
             return <ion-buttons class="back">
-                <ion-button onClick={() => this.navigateBack()}>
+                <ion-button onClick={() => this.navigateBack()} color="primary">
                     <ion-icon name="close"></ion-icon>
                 </ion-button>
             </ion-buttons>;