confidentiality leads to implementation problems for other basic features

Signed-off-by: Mattias Andrée <maandree@operamail.com>
short descriptions of the architectures and lists of implementations

Signed-off-by: Mattias Andrée <maandree@operamail.com>
some other monolithic display servers

Signed-off-by: Mattias Andrée <maandree@operamail.com>
hybrid server architecture

Signed-off-by: Mattias Andrée <maandree@operamail.com>