Allow owner to disable guest links

[mtlynch]

I just ran into a situation where I accidentally published a guest link too widely. I wanted to expire it and add a note explaining why it was disabled, but my only option was to delete it.

[kovmir]

I wanted to expire it and add a note explaining why it was disabled

Does that mean you want the ability to re-enable that same link later?

[Liebeg]

beeing able to enable and disable links with a switch would be a quite greate feature