syphonclient% and server% are better at auto-init

Turned on @repetitions/allow 1 in the [jcom.return] used to populate
the server [umenu] in [jmod.syphonclient%], so that now servers with
identical names will show up. Added a [jcom.init] to
[jmod.syphonserver%] so that the module announces itself with its
default server name as soon as it’s loaded, and is automatically found
by [jmod.syphonclient%].