Add novnc as Kimchi dependency

novnc is present in all supported Linux distributions (RHEL6.5,
RHEL7, Fedora20, Ubuntu 14.04 and openSUSE 13.1) so instead of importing
its code into Kimchi source source structure we must add its package as
a Kimchi dependency and use it as is.

Signed-off-by: Aline Manera <alinefm@linux.vnet.ibm.com>
Delete imported novnc code

Now Kimchi depends on novnc package so the imported code can be removed.

Signed-off-by: Aline Manera <alinefm@linux.vnet.ibm.com>