WL-3332

WL-3332 - SES tool has wrong stylesheet

'/library/skin/ox/tool.css' is on the SES page but does not exist (in the code) so you don't get any CSS rules from it.

The file that's wanted to render the page is at '/library/skin/neo-ox/tool.css' so I made it pick up
the 'neo-' bit which is in a property 'portal.neoprefix' in sakai.properties.