AI bug fixes and update interfaces (#6925)

* allow settings to load domain and user settings

* ensure engine is also enabled before attempting to create a new object

* add default values to stop undefined variable warnings

* enforce all models to set and return voices and languages

* enforce all models to set and return languages

* ensure speech_enabled is set by the current session

app/recordings/recordings.php

@@ -380,6 +380,9 @@
 		}
 	}
 
+//set the default value for speech
+	$speech_enabled = !empty($_SESSION['ai']['speech_enabled']['boolean']) && !empty($_SESSION['ai']['speech_engine']['text']);
+
 //create token
 	$object = new token;
 	$token = $object->create($_SERVER['PHP_SELF']);