Load error if a bot has not optional `parameters` field in runtime configuration

If a bot has no parameters, like:

...
    "bot-id": {
        "name": "foobar bot",
        "group": "Expert",
        "module": "intelmq.bots.experts.foobar",
        "description": "Foobar descr",
        "enabled": "true"
    }
...

a user gets this error:

(Which also points the user to the completely wrong direction)
I suspect that the code which needs to be adapted is here:

intelmq-manager/intelmq_manager/static/js/configs.js

Lines 150 to 163 in a83dbbe

	app.bots[bot_group][bot_name] = {
	'name': bot_name,
	'group': bot_group,
	'module': bot['module'],
	'description': bot['description'],
	'enabled': true,
	'parameters': bot['parameters'],
	'run_mode': 'continuous'
	};
	for (let parameter in bot['parameters']) {
	var value = bot['parameters'][parameter];
	app.bots[bot_group][bot_name]['parameters'][parameter] = value;
	}