CRM-21469: Fix removal from all groups from Edit Contact

[mlutfy]

Overview

Caused by CRM-15830: when editing a contact record, it is not possible to remove all groups.

How to reproduce:

• Create a contact, add the contact to 1 group
• Edit the contact, remove the group from the list of groups for that contact (NB: not from the 'Group' tab, that works fine).

Result: the contact is still in the group.

When testing, also test that this works correctly even if "Groups and Tags" is disabled from the Contact Preferences (Admin > Customize screens > Display Preferences).

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• CRM-21469: Cannot remove all groups/tags when editing a contact
• CRM-15830: All groups removed from contact when editing

[mlutfy]

nb: I could not figure out why groups and tags are handled differently in this form. Tags have the same problem, but I could not find a quick fix.

[eileenmcnaughton]

(CiviCRM Review Template WORD-1.0)

• (r-jira) Pass
• (r-test) _Pass
• (r-code) Pass
• (r-doc) Pass
• (r-maint) Pass
• (r-run) Undecided:
• (r-user) Pass:
• (r-tech) Pass:

I took a quick look at the code and am happy to merge once it has been UI tested

[eileenmcnaughton]

I UI tested it & agree this fixes it for groups (but no tags) with no apparent downside