have a +, to add (or delete) a subscription in the active session

[ckrey]

via @triafleur

another request

adding a subscription is a bit awkward in your program, would be nice just
to have a +, to add (or delete) a subscription in the active session window
without having to leave the active window, go to session window, go to the
subscription window...

thanks

[ckrey]

you already have a delete after a long press in the SUBs or PUBs sub-window