Not compatible with 2018-04-22 "Greebo"

[kdohBNY]

Upgraded my Dokuwiki install to 2018-04-22 "Greebo" and now the theme throws the following error:

"A fatal error occured during compliation of the CSS file. If you recently installed a new plugin or template it might be broken and you should try disabling it again. [s is undefined: failed at `` in /lib/tpl/codowiki/css/design.less at line 287]"

[evnix]

Please redownload the file.
This has already been fixed in #11