Support for Multi select when using the Satrabel.DnnUsers data source

[Timo-Breumelhof]

I have this (profile) field defined:

"Options": {
          "title": "My Options",
          "type": "array",
          "enum": [
            "option 1",
            "option 2",
            "option 3",
            "option 4"
          ],
		  "default": ""
        }

"Options": {
          "dependencies": {},
          "type": "checkboxlist",
          "optionLabels": [
                                    ...
                                 ]
                   }

When I save this the profile field contains this:

[ "option 1", "option 2"]

But when I open the user in OC, all checkboxes are filled