Move dialogue app's helper functions for creating a jsbox config into their own module
Change dialogue app determine_endpoints util to take config as a parameter
Add a configured_endpoints method to dialogue conversation definition
Change ConversationActionDispatcher to give dispatcher methods a wrapped conversation
Change dialogue api action dispatcher save method to update the conversation's extra endpoints
Merge branch 'develop' into feature/issue-1053-get-dialogue-apps-endpoints-to-show-up
Merge branch 'feature/issue-1053-get-dialogue-apps-endpoints-to-show-up' into develop