[ticket/12359] Remove inline width styling on UCP birthday fields

PHPBB3-12359
Merge remote-tracking branch 'VSEphpbb/ticket/12359' into develop-olympus

* VSEphpbb/ticket/12359:
  [ticket/12359] Remove inline width styling on UCP birthday fields
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
  [ticket/12359] Remove inline width styling on UCP birthday fields

Conflicts:
	phpBB/styles/prosilver/template/ucp_profile_profile_info.html