Merge pull request #16850 from colemanw/bool5

Cleanup reverse boolean expressions

diff --cc CRM/Core/BAO/UFGroup.php
Simple merge

diff --cc CRM/Core/PseudoConstant.php
Simple merge

diff --cc CRM/UF/Page/ProfileEditor.php
Simple merge

diff --cc CRM/Utils/File.php
Simple merge

diff --cc CRM/Utils/Rule.php
Simple merge

diff --cc CRM/Utils/System/Joomla.php
Simple merge