Wrong MIME types lead to uninterpreted css stylesheets

When deploying the current crowd WAR to jetty, crowd serves all contents as "text/html". All current browser releases ignore css files with a mime type of "text/html" which leads to an destroyed layout of the User Console.

However, this error does not occur with the standalone release of crowd as Tomcat seems to correct this bug by overriding the mime types.

Looks like a Filter is setting wrong mime types for all served files...