Revert "Build with clean CSS"
Revert "Build with clean CSS"

This reverts commit 3515f5a46cfb2ee2a6d91f24fb62302525faf1ff.

Change-Id: I94a64d8739014b3a6ca8770dfc4e3f50d7634c19

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui