Add Requirement Group in Groups tab of RequirementGroupDialog throws an error

[lxatstariongroup]

Prerequisites

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Description

When yo try to add a new Requirement Group to an existing Requirement Group via the RequirementGroupDialog's Groups tab, an error is thrown when you hit the save button in the "child" RequirementGroupDialog:

could not find the corresponding clone for the container of the updated thing added outside the chain of transaction.

[lxatstariongroup]

@samatstariongroup The SDK currently cannot handle this kind of actions. I propose to remove the Add button from the Group tab, or remove the group tab completely.

[samatstariongroup]

the container is the spec, put a reference to a "container" group (agreed that naming is confusing)