function handleResetDataRequest() {
		readData();

		return [
			204,
			{
				"OData-Version" : "4.0"
			},
			null
		];
	}
Handles POST requests for resetting the data and returns a fitting response.
Reloads the base user data from file.
Does NOT check for duplicate user names because that is how the live service behaves.
@returns {Array} an array with the response information needed by Sinon's respond() function