Mark ignore on the cluster as it requires a non-default python version

Reported by:	bapt


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@373535 35697150-7ecd-e111-bb59-0022644237b5
Add new port www/seahub

PR:		193135
Submitted by:	Jingfeng Yan

Seahub is the web frontend for seafile-server.
WWW: https://github.com/haiwen/seahub


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@373536 35697150-7ecd-e111-bb59-0022644237b5