NethVoice CTI: user group are not shown based on configured permissions

[andrea-marchionni]

The operators' tab in NethVoice CTI should display users based on the groups enabled in the profile associated with each user.

Current Behavior:
All users and all groups are displayed across all views, regardless of the profile settings.

Steps to Reproduce the Issue:

1. Create two user groups.
2. Assign some users to one group and others to the second group.
3. Associate a profile that is configured to display only the users of a specific group.
4. Observe that both groups and all users are visible, despite the profile settings.

Additional Observations:

• Users who are not assigned to any group are not displayed in the group view but appear in other views.

Proposed Improvements:

1. Consider implementing a permission setting that enables viewing all users by default.
2. Evaluate the possibility of ordering groups in a custom sequence, as the current order is strictly alphabetical.