IAdmin methods require logging into system group

[jamoore]

An admin user who has his/her default group set to a non-system group will be required to log into the system group in order to be considered an "admin". I.e:

  new ServiceFactory(new Login("me","password","system","User");

or

  c = omero.client()
  c.ic.getImplicitContext().put(omero.constants.GROUP, "system")

This may or may not be desired behavior.

[jmoore]

Too late to make such a large change. Should be reviewed when we are going from private back to public permissions perhaps.

[jmoore]

Handled as a part of #1434 (specifically #445)