Django admin header should consider user.get_short_name

Issue #121 resolved
dpantele
created an issue

Line 32 in theming/templates/admin/base.html should be

<strong>{% filter force_escape %}{% firstof user.get_short_name user.first_name user.username %}{% endfilter %}</strong>

to allow Django 1.5 custom user model. See new contrib/admin/templates/admin/base.html