[ticket/10174] Rename "Ban usernames" to "Ban users" in ACP

Changing the language string from "Ban usernames" to "Ban users"
to clarify its use. It bans users by their name and not the username itself

PHPBB3-10174
[ticket/12297] Delete user_from column on update

PHPBB3-12297
Merge remote-tracking branch 'Elsensee/ticket/12297' into develop-ascraeus

* Elsensee/ticket/12297:
  [ticket/12297] Delete user_from column on update
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12297] Delete user_from column on update
Merge remote-tracking branch 'schosser/ticket/10174' into develop-olympus

* schosser/ticket/10174:
  [ticket/10174] Rename "Ban usernames" to "Ban users" in ACP
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
  [ticket/10174] Rename "Ban usernames" to "Ban users" in ACP
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/10174] Rename "Ban usernames" to "Ban users" in ACP
Merge remote-tracking branch 'upstream/develop' into develop