Update SQL, make server send dummy message back
PROTOCOL: update authentication response. Add misuse.
registration: replies sent for regsuccess, username taken
PROTOCOL: add size limits. Add simple doc.
inc/sql_strings.h: update inserts for user (salt)
inc/psylbm.h: add constants of project (size limits)
inc/protocol_responses.h: add error responses
src/message_handler.c: add error sendbacks
db_handler: hashing passwords (probably) works