OR-548 handle websocket server through SSL by attaching it to webserver.sslserver
OR-548 wsserver.options should be retrieve from the configuration file.
Merge pull request #371 in OR/rse from ~SLEMAISTRE/rse:OR-548 to master

* commit '8035949d6fcc4355511bbc8c5b3b9786acc5b85d':
  OR-548 wsserver.options should be retrieve from the configuration file.
  OR-548 handle websocket server through SSL by attaching it to webserver.sslserver
OR-548 fix linters