Merge pull request #17330 from colemanw/dao_field

[REF] Cleanup and extract string functions specific to entity names.

diff --cc CRM/Admin/Page/APIExplorer.php
Simple merge

diff --cc CRM/Core/DAO/AllCoreTables.php
Simple merge

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

diff --cc api/api.php
Simple merge

diff --cc api/v3/utils.php
Simple merge