Fixed #1812 -- permit apps without models (without disguising other errors).

                _app_errors[app_name] = e

    return _app_list

def get_app(app_label):

    "Returns the module containing the models for the given app_label."

def get_app(app_label, emptyOK = False):

    "Returns the module containing the models for the given app_label. If the app has no models in it and 'emptyOK' is True, returns None."

    get_apps() # Run get_apps() to populate the _app_list cache. Slightly hackish.

    for app_name in settings.INSTALLED_APPS:

        if app_label == app_name.split('.')[-1]:

            return load_app(app_name)

            mod = load_app(app_name)

            if mod is None:

                if emptyOK:

                    return None

            else:

                return mod

    raise ImproperlyConfigured, "App with label %s could not be found" % app_label

def load_app(app_name):

    "Loads the app with the provided fully qualified name, and returns the model module."

    global _app_list

    mod = __import__(app_name, '', '', ['models'])

    if not hasattr(mod, 'models'):

        return None

    if mod.models not in _app_list:

        _app_list.append(mod.models)

    return mod.models