It should be easier to embed Conversations

(User Story, Closed -> Fixed, Priority: High, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Summary: We currently have a low-level API for embedding Conversations. That works, but is kind of a pain.
Introduce a higher-level _showConversations() function, which does all the stuff shown in the linked Recipe more or less automatically, with the various flags as parameters.