strict MIME checking errors

1. install nuxeo
2. install web-ui
3. login
4. create a workspace
5. open google inspector
6. select the console tab and clear it
7. create a note
8. observe errors like the following in the console:

   Refused to apply style from 'http://localhost:8080/nuxeo/ui/bower_components/nuxeo-ui-elements/widgets/alloy/skins/moono/editor.css?t=H9MF' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.
   

This can also be reproduced on nightly.nuxeo.com