Description of problem:

I received a 500 error when trying to access the OpenStack dashboard after install RDO Havana on Fedora 19.  The following Python exception was in /var/log/httpd/error_log:

  [Sat Nov 09 21:46:05.382168 2013] [:error] [pid 20998] [remote 192.168.122.1:21571]     raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (self.SETTINGS_MODUL E, e))

This error stems from a failure a prior ImportError caused when trying to import the openstack_dashboard.settings module:

  # cd /usr/share/openstack-dashboard
  # python
  Python 2.7.5 (default, Oct  8 2013, 12:19:40) 
  [GCC 4.8.1 20130603 (Red Hat 4.8.1-1)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import openstack_dashboard.settings
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "openstack_dashboard/settings.py", line 28, in <module>
      from openstack_dashboard import exceptions
    File "openstack_dashboard/exceptions.py", line 23, in <module>
      from heatclient import exc as heatclient
    File "/usr/lib/python2.7/site-packages/heatclient/__init__.py", line 13, in <module>
      import pbr.version
  ImportError: No module named pbr.version

This is caused by heatclient attempting to import the "pbr" module.
Install python-pbr allows the dashboard to operate successfully.