Started chat system implementation(not working yet)
removed some over-synchronization
updated net/jack class hierarchy
some bugfixes to chat
fixed userRename not assigning permissions
added chat commands and fixed /nick problem

/nick and /register would occasionally cause the server to broadcast
garbled characters to users after validating a login, because the client-side
hashing algorithm might generate EOL bytes; the adjusted algorithm should
avoid this, but it comes at the price of not being backward-compatible,
so you should delete your existing server.db upon upgrading to this version.
implemented several chat commands
added chat.conf
added chat README
fixed links in markdown
Update README.md
Update README.md
fixed issues with creating default chat.conf