Bump requirements for python3 support, needs testing

requirements.txt

@@ -1,12 +1,10 @@
 Django>=1.8,<1.9
-django-auth-ldap==1.2.6
+pyldap==2.4.21
+django-auth-ldap==1.2.7
 django-bootstrap-form==3.2
 django-cors-headers==1.1.0
-django-extensions==1.5.5
-django-phonenumber-field==0.7.2
-gunicorn==17.5
-mysqlclient==1.3.6
-ndg-httpsclient==0.4.0
-pyasn1==0.1.8
-pyOpenSSL==0.15.1
-requests==2.7.0
+django-extensions==1.6.1
+django-phonenumber-field==1.0.0
+gunicorn==19.4.5
+mysqlclient==1.3.7
+requests==2.9.1