Making LDAP tests optional based presence of python-ldap
If python-ldap exists then test_settings.py has the core ldap auth service added to AUTH_PROVIDERS. If not, then it's omitted and the ldap tests know to skip.
PEP8 and a bit of code commenting
Merge pull request #248 from steveandroulakis/ldap_skip_tests

Making LDAP tests skip based presence of python-ldap