BDKD-168 - added the new BDKD CKAN skin from Codrin.
BDKD-169 - added SIEF attribution
BDKD-168 Changed the name slightly so that we can differentiate
between a BDKD ckan and a standard CKAN.
BDKD-169 Added link to www.knowledgediscovery.org on the portal.
BDKD-169 Revert the name of the package back to ckan instead of bdkd-ckan
as it was confusing other packages that requires ckan. The bdkd string
is now append to the version instead, producing ckan-2.2.1b-bdkd.
Also replaced sirca.min.css, which was also used by CKAN.
Merge pull request #3 from sirca/bdkd169_sief_bdkd_skin

BDKD-169 Skin CKAN 2.2.1 for used by the BDKD project