Parse config file early

Fixed:
Load and validate the config file in the queuemgr once, then pass that into the web child. This prevents the web child from bombing out unnecessarily on config errors.

Cleaned up:
The rq-install script default tmpdir is now /tmp.
The host and port accessorst on the queuemgr class were unused.
Daemons monitor process is not started anymore.
Numerous README improvements and cleanups.