Merge pull request #8265 from mollux/CRM-17983-v2

CRM/Activity/Page/AJAX.php

CRM/Contact/Page/AJAX.php

CRM/Core/Page/AJAX.php

CRM/Custom/Page/AJAX.php

CRM/Group/Page/AJAX.php

CRM/Mailing/Page/AJAX.php

CRM/Profile/Page/MultipleRecordFieldsListing.php

CRM/Utils/Rule.php

CRM/Utils/Sort.php

CRM/Utils/Type.php

templates/CRM/Profile/Page/MultipleRecordFieldsListing.tpl

tests/phpunit/CRM/Utils/TypeTest.php