[ticket/11253] Add migration to add auth check to UCP signature module

PHPBB3-11253
[ticket/11253] Fix typo in constant

PHPBB3-11253
[ticket/11253] Fix a few things brought up in the PR
[ticket/11253] Put AND clause in correct SQL query

PHPBB3-11253
Merge remote-tracking branch 'remotes/imkingdavid/ticket/11253' into develop

# By David King
# Via David King
* remotes/imkingdavid/ticket/11253:
  [ticket/11253] Put AND clause in correct SQL query
  [ticket/11253] Fix a few things brought up in the PR
  [ticket/11253] Fix typo in constant
  [ticket/11253] Add migration to add auth check to UCP signature module