Add/expand jsdocs

JitsiConferenceEvents.js

@@ -85,7 +85,8 @@ var JitsiConferenceEvents = {
      */
     CONFERENCE_ERROR: "conference.error",
     /**
-     * Indicates that conference has been joined.
+     * Indicates that conference has been joined. The event does NOT provide any
+     * parameters to its listeners.
      */
     CONFERENCE_JOINED: "conference.joined",
     /**

JitsiConnectionEvents.js

@@ -4,15 +4,26 @@
  */
 var JitsiConnnectionEvents = {
     /**
-     * Indicates that the connection has been failed for some reason.
+     * Indicates that the connection has been failed for some reason. The event
+     * proivdes the following parameters to its listeners:
+     *
+     * @param err {string} the error (message) associated with the failure
      */
     CONNECTION_FAILED: "connection.connectionFailed",
     /**
-     * Indicates that the connection has been established.
+     * Indicates that the connection has been established. The event provides
+     * the following parameters to its listeners:
+     *
+     * @param id {string} the ID of the local endpoint/participant/peer (within
+     * the context of the established connection)
      */
     CONNECTION_ESTABLISHED: "connection.connectionEstablished",
     /**
-     * Indicates that the connection has been disconnected.
+     * Indicates that the connection has been disconnected. The event provides
+     * the following parameters to its listeners:
+     *
+     * @param msg {string} a message associated with the disconnect such as the
+     * last (known) error message
      */
     CONNECTION_DISCONNECTED: "connection.connectionDisconnected",
     /**