omero command as root and stderr

[dpwrussell]

Firstly it would be really nice to be able to run the omero CLI as any user. Yes, running as root could be bad, but for many functions there is no reason not to be able to do this, e.g. generating an nginx configuration.

Secondly, the fatal error reported when you do run as root is to stdout instead of stderr.

[joshmoore]

Of

	admin, cd, chgrp, chown, config, db, delete, download, export,
	fs, group, help, hql, import, ldap, load, metadata, node,
	obj, render, script, search, server, sessions,
	shell, tag, testengine, upload, user, version, web

I'd suggest:

• no root: admin, config, node, and any part of web which would modify the config
• maybe no root: fs, import