Merge branch 'dev/5.0.x' into rc/5.0.x

packages/app/src/styles/_override-bootstrap-variables.scss

@@ -83,6 +83,7 @@ $border-radius-lg: 8px;
 //
 // For each of Bootstrap's buttons, define text, background, and border color.
 $btn-link-disabled-color: $gray-500;
+$btn-focus-box-shadow: none;
 $btn-active-box-shadow: none;
 
 //== Forms