Switched out HyperlevelDB for RocksDB in the example configuration script.
It now matches what we use in the gateway appliances and on our own
servers.

Added the rpc_startup bit that turns debugging down to a more manageable
level to save disk space.

Updated comments on the directives for WebSockets' SSL support so that they
make a little more sense.

Signed-off-by: The Doctor <drwho@virtadpt.net>