Remove PyWSGI and move to Flask server

Gevent was completely failure. The API would block during large file
uploads with no obvious solutions beyond "use gunicorn", which is not
suited to this. I originally had this working with the Flask "debug"
server, so just move to using that all the time. SSL is added using a
custom context with the OpenSSL library, so include that as a
dependency.

api-daemon/pvcapid/flaskapi.py

@@ -124,6 +124,8 @@ app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://{}:{}@{}:{}/{}'.format(con
 
 if config['debug']:
     app.config['DEBUG'] = True
+else:
+    app.config['DEBUG'] = False
 
 if config['auth_enabled']:
     app.config["SECRET_KEY"] = config['auth_secret_key']