New KerPass web site

With the new features of the KerPass UST token (ECDSA signatures and OATH passwords) , our 6 months old website was facing the risk to grow up too large. Following discussions with some knowledgeable marketing guys , our attention was also drawn on the fact that the patient reader in quest of general information was not prepared to browse extensively the site. So the rewrite is over , we came with something shorter , moving the detailled documentation to an easy to maintain wiki.