@contextmanager
def get_app_context(conf=None):
    """get an app context!

    we will receive the name of the application and then try to build out the
    applicaton and return it. the important thing with this function is that we
    will return the application context not the actual application object.
    this is usefull for modules and functions that need the application context
    to be able to do what they would need to do.

    the config is the name of the config class we want to use to create the app
    with.

    :param conf: name of the config class
    :return: a flask application context
    """
    if not conf:
        conf = 'development'
    try:
        app = create_app(cm.get(conf))
        with app.app_context() as ctx:
            yield ctx
    finally:
        pass