A utility framer for adding page/request based messaging to your layouts.
This frame modifies the context class;
it adds the add_message(text, key) method to the context.
It also adds two methods to the output node:
- helpers.has_messages(): boolean
- helpers.message_alert(): string (html) - which renders messages in a bootstrap style set of alerts.
Note -- tests do not work currently - dependant on a former install context.