[1.2.X] Reverted 'now' template tag documentation changes so it describes the...

[1.2.X] Reverted 'now' template tag documentation changes so it describes the real code implementation regarding (lack of) interaction with L10N machinery. Refs #15263. Thanks danielr for the report.

Backport of [15678] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15679 bcc190cf-cafb-0310-a4f2-bffc1f526a37