Update test infrastructure, allow py.test

.coveragerc

@@ -0,0 +1,3 @@
+[run]
+source = ./
+omit = */migrations/*

pytest.ini

@@ -0,0 +1,5 @@
+[pytest]
+norecursedirs = node_modules
+DJANGO_SETTINGS_MODULE = {{ project_name }}.settings.env.unittest
+python_files=test*
+python_classes=Test*

runtests.py

@@ -1,14 +1,13 @@
 #!/usr/bin/env python
 import sys
 import os
-from django.conf import settings
 from django.core.management import execute_from_command_line
 
 if __name__ == "__main__":
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "{{ project_name }}.settings.env.unittest")
 
     TEST_APPS = [
-        'apps',
+        'apps',  # also takes subfolders
         'frontend',
     ]