📝 Rename "User" to "Applicant" in audit log
📝 Rename "User" to "Applicant" in audit log

This commit updates our audit log feature to replace the term "User"
with "Applicant", since this terminology more accurately reflects the
roles of users in the QAE system (arguably, _everyone_ is a user).

bitzesty/qae,bitzesty/qae,bitzesty/qae,bitzesty/qae