Pojos Interface getUserDetails method

[jburel]

Currently the method getUserDetails from IPojos service returns an Experimenter Data object, user. user.getGroups().getExperimenters() returns null.

To support collaborative work, user.getGroups().getExperimenters() should return a collection of Experimenter Data objects.

Note that for those Experimenter Data objects, the method object.getGroups().getExperimenters() can return null. I am not even sure that object.getGroups() needs to return a non-null collection.

[jburel]

the method user.getGroups() should probably only return the real groups i.e. remove from the list the group 'user' and 'default'

[jburel]

After discussion with Chris, I realised that I misunderstood the requirement. So this ticket doesn't need to be considered for now.

[jmoore]

Initial changes to support this.