[ticket/12354] Assert same instead of equal where necessary in passwords tests

In some tests we try to make sure that we do not get the same output in a
limited timeframe. These tests should use assertSame/NotSame instead of
assertEqual/NotEqual.

PHPBB3-12354
[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
Merge remote-tracking branch 'Marc/ticket/12354' into develop-ascraeus

* Marc/ticket/12354:
  [ticket/12354] Assert same instead of equal where necessary in passwords tests