asyncopation

> Thanks @josefarrugia ! Where does that code go? I tried putting it in `slate.config.js` and it didn't change anything. @michaelburtonray This should be included in the recently released [beta19](https://github.com/Shopify/slate/compare/v1.0.0-beta.18...v1.0.0-beta.19)....

I'm still encountering this issue on latest master after Redmine upgrade to 2.2.3 ActionView::Template::Error (undefined method `tag_cloud_in_project' for #): 2: 3: 4: "font-size: #{10 * factor + 9}pt" } 7:...