separate novnc from sunstone to implement an dedicated init script for nonvnc
setting the correct script path for opennebula sunstone initscript
setting the right paths for novnc scripts
Separate novnc from CentOS init scripts

needs PR https://github.com/OpenNebula/one/pull/22
don't fail too hard. the user will see an error anyway
Merge branch 'novnc_init' of https://github.com/bechtoldt/one into feature-2862

Conflicts:
	share/pkgs/Debian/opennebula-sunstone
	share/pkgs/Ubuntu/opennebula-sunstone
Merge branch 'novnc_init_centos' of https://github.com/tuxmea/one into feature-2862
feature #2862: make sunstone-server script start novnc by default

Add commands start-sunstone, stop-sunstone, restart-sunstone to bypass novnc start,
stop and restart. The init scripts for CentOS, Debian and Ubuntu are changed so
they use these new commands.