starting feature #4277 by changing spaceLook.jsp to be XHTML compliant
closing main part of feature #4277
on feature #4277, upgrading REST service space-appearance to support new attribute 'css'
Merge branch 'master' into ney-feature4277
Merge branch 'ney-feature4277' of https://github.com/NicolasEYSSERIC/Silverpeas-Core into integration