Added Visko-Web Folder

Added Visko WEb Folder to the directory. You will need to replace your
visko web folder under Visko with this visko-folder. In order to get
things to run, you will need to run the ant script within this
visko-folder, and move the war file generated by the ant built (located
at ${server-base-path} into your tomcat web applets folder.