If  is prefixed with '/', the path will be relative to the webroot
Fixing a problem of incompatibility with MinifyHelper.php
Merge https://github.com/maurymmarques/minify-cakephp into original_version
Fix support for CakePHP not on base url

File names are passed correctly to Minify when CakePHP is *not* deployed on the base url `/`.
This restores the behavior provided by the version from SHA 1098e610c76491a989ba05f616ac325d455353d1.