Upgrade dependencies for Django 3.x upgrade

Also converted to using pyproject.toml

.gitignore

@@ -81,3 +81,5 @@ tags
 
 .bash_history
 .inputrc
+
+.eggs

pyproject.toml

@@ -0,0 +1,8 @@
+[build-system]
+requires = [
+    "setuptools >= 48",
+    "setuptools_scm[toml] >= 4, <6",
+    "setuptools_scm_git_archive",
+    "wheel >= 0.29.0",
+]
+build-backend = 'setuptools.build_meta'

requirements/base.in

@@ -2,10 +2,10 @@
 -e .
 
 # installed from Git
--e git+https://github.com/onaio/python-digest.git@3af1bd0ef6114e24bf23d0e8fd9d7ebf389845d1#egg=python-digest
--e git+https://github.com/onaio/django-digest.git@eb85c7ae19d70d4690eeb20983e94b9fde8ab8c2#egg=django-digest
--e git+https://github.com/onaio/django-multidb-router.git@f711368180d58eef87eda54fadfd5f8355623d52#egg=django-multidb-router
--e git+https://github.com/onaio/floip-py.git@3c980eb184069ae7c3c9136b18441978237cd41d#egg=pyfloip
--e git+https://github.com/onaio/python-json2xlsclient.git@62b4645f7b4f2684421a13ce98da0331a9dd66a0#egg=python-json2xlsclient
--e git+https://github.com/onaio/oauth2client.git@75dfdee77fb640ae30469145c66440571dfeae5c#egg=oauth2client
--e git+https://github.com/onaio/[email protected]#egg=ona-oidc
+#-e git+https://github.com/onaio/python-digest.git@3af1bd0ef6114e24bf23d0e8fd9d7ebf389845d1#egg=python-digest
+#-e git+https://github.com/onaio/django-digest.git@eb85c7ae19d70d4690eeb20983e94b9fde8ab8c2#egg=django-digest
+#-e git+https://github.com/onaio/django-multidb-router.git@f711368180d58eef87eda54fadfd5f8355623d52#egg=django-multidb-router
+#-e git+https://github.com/onaio/floip-py.git@3c980eb184069ae7c3c9136b18441978237cd41d#egg=pyfloip
+#-e git+https://github.com/onaio/python-json2xlsclient.git@62b4645f7b4f2684421a13ce98da0331a9dd66a0#egg=python-json2xlsclient
+#-e git+https://github.com/onaio/oauth2client.git@75dfdee77fb640ae30469145c66440571dfeae5c#egg=oauth2client
+#-e git+https://github.com/onaio/[email protected]#egg=ona-oidc