Fixed #24045 -- Removed useless mark_safe() call in trans_null.py
Fixed #23948 -- Moved password help text from the template to the form.

Thanks Mithos for the report and patch.
Documented AdminSite.has_permission(); refs #22295.
Fixed #23346 -- Fixed lazy() to lookup methods on the real object, not resultclasses.

Co-Authored-By: Rocky Meza <rmeza@fusionbox.com>
Removed obsolete item from deprecation timeline.

Initial SQL data will be removed in Django 1.9 so changes to it
aren't relevant.
Fixed #24054 -- Enabled sqlsequencereset for apps with migrations.
Clarified custom header instructions in tutorial 2.
Replaced sqlall in some bash_completion/admin_scripts tests.

sqlall will be removed in Django 1.9, so now's a good time to remove
its usage where it's not important.
Removed an unnecessary models file in the admin_scripts tests.