Signed-off-by: Jason Myers <jason@jasonamyers.com>

Before this change, the get_admin_log method would expect User model's
FK to be named `id`. When changing that FK name, admin/index.html
rendering would fail.

This includes:
 * Changed the use of id for the use of pk property.
 * Added a regression test that fails without the patch.

This commit refs #20088.

* Renamed the __unicode__ methods
* Applied the python_2_unicode_compatible decorator
* Removed the StrAndUnicode mix-in that is superseded by
  python_2_unicode_compatible
* Kept the __unicode__ methods in classes that specifically
  test it under Python 2

Oracle can have problems with such columns. Fixed #17932 again.
Thanks to Vinay Sajip for the report.

Handled values returned by functions more like field values.
In particular, localized dates, times and datetimes properly,
and converted datetimes to the current timezone.

Fixed #18086 -- Restored '-pk' as the default order in the admin changelist. This rectifies a slight change in behavior introduced in Django 1.4 and r17635.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17881 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #17932 -- Tweaked the admin_changelist tests because Oracle doesn't like columns named 'number'.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17767 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #17198 -- Ensured that a deterministic order is used across all database backends for displaying the admin change list's results. Many thanks to Luke Plant for the report and general approach, to everyone involved in the design discussions, and to Carl Meyer for the patch review. Refs #16819.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17635 bcc190cf-cafb-0310-a4f2-bffc1f526a37

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17102 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #16257 -- Added new `ModelAdmin.get_list_display_links()` method to allow for the dynamic display of links on the admin changelist. Thanks to graveyboat for the suggestion and initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17037 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Convert much of the regression tests to use absolute imports.  There's still work to be done though.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16976 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #13902 -- Fixed admin list_filter so it doesn't show duplicate results when it includes a field spec that involves m2m relationships with an intermediate model. Thanks Iván Raskovsky for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15526 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #14982 -- Ensure that EMPTY_CHANGELIST_VALUE is honored for nullable foreign keys. Thanks to marcob for the report and fix, and to sontek for the test case.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15286 bcc190cf-cafb-0310-a4f2-bffc1f526a37

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10782 bcc190cf-cafb-0310-a4f2-bffc1f526a37