Fixing secret key generation.
Changed from a static to ramdom salt.
Removing unused randomKey method.
Merge branch 'danbev-AGPUSH-329-secret-key'
Removing thread-factory from subsystem.
Removed 'name' from configuration. Will be 'simplepush' now.
Refactoring tests.
Avoiding port conflicts in unit test.
Removed ThreadFactory from code.
Renaming Netty -> SimplePush.
ServerAdd now takes configuration objects for SockJS and SimplePush
Adding useragent-reaper-timeout option.
Adding notification-prefix and name.
Renaming endpoint-tls -> notification-tls.
Adding notification-ack-interval.
Adding notification-host.
Adding notification-port.
Adding sockjs-prefix.
Adding sockjs-cookies-needed.
Adding sockjs-url.