adds structure for virtual environment uwsgi and http communication

- starts uwsgi and flask in virtual environment instead of docker
- sets oauth2 https error to false (OAUTHLIB_INSECURE_TRANSPORT=1)

- this setup works, but
  - moving it into docker
  -  removing the venv
  -  and allowing https connection internally?
would be better

calendarwatch/bin/pyrsa-keygen

@@ -0,0 +1,8 @@
+#!/home/raphael/dev/git/calendarwatch_frontend/calendarwatch/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from rsa.cli import keygen
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(keygen())