The clients never get passed useful values to their `__init__` methods.
Rather the real values are passed through later using the `init_app`
method.
So it should be an error if the client is relying on the values that
get passed to it’s init method. Easiest way to ensure this is by making
the `__init__` method not expect any arguments and passing fake values
to the `Super` call.
Previous the table of templates on the dashboard was for all time.
This commit uses the `limit_days` parameter of the API endpoint to only
show template usage from the last 7 days, aligning with the big numbers
shown above.
