Updated LIGO auth. Remove LigoUser model.

gracedb/admin.py

gracedb/api.py

gracedb/feeds.py

gracedb/forms.py

gracedb/middleware/auth.py

gracedb/migrations/0004_populate_tags.py

...grations/0005_stage1_rm_ligouser__add_new_foreign_keys.py

...ons/0006_stage2_rm_ligouser__populate_new_foreign_keys.py

...tions/0007_stage3_rm_ligouser__remove_old_foreign_keys.py

gracedb/migrations/0008_auto__del_user.py

gracedb/models.py

gracedb/views.py

ligoauth/__init__.py

ligoauth/admin.py

ligoauth/fixtures/initial.json

ligoauth/management/__init__.py

ligoauth/management/commands/__init__.py

ligoauth/management/commands/refresh_users_from_ldap.py

ligoauth/middleware/__init__.py

ligoauth/middleware/auth.py