.less code formatting

Does anyone know how to get a .less file to work with code reformat. I can't seem to be able to add or associate the file type as CSS. Seems a bit of a shame if I have to manually do it.

While I am here can Rubymine recognise and include import less files such that variables in the imported file are correctly validated and available in the importing file?

Thanks for any answers,
Regards
Colin McGowan