term= query option to specify TERM environment variable for host, valid
strings are alpha-numeric with a hypen (validated). Otherwise the
default ssh.term variable from `config.json` will be used.
- validation for host (v4,v6,fqdn,hostname), port (integer 2-65535),
and header (sanatized) from URL input
moved some events into socket/index.js to better organize code
created session.ssh property for application session variables
moved crypto algorithms to config.json and assigned to
..session.ssh.algorithms variable
added some additional error handing functions and debugging points
- `DEBUG=ssh` will put the ssh2 module into debug mode
- `debug=WebSSH2` will output additional debug messages for functions
and events in the application (not including the ssh2 module debug)
- created socket/index.js to start the process of separating out app
functions, just holds error logging function at this point
- corrected some events on public/client.js so the primary error cause
is not overwritten
- ensure that ssh connection is terminated when websocked is
disconnected by the client
