Merge branch 'fix-logo' into 'master'

Remove width restriction for logo on sign-in page.

Follow-up on !4661 since we didn't remove the width restriction on that.

See merge request !4888

app/assets/stylesheets/framework/header.scss

@@ -26,7 +26,6 @@ header {
       text-align: center;
       #tanuki-logo, img {
-        width: 36px;
         height: 36px;
       }
     }