Allow adding recipients to pre-generated love links

[mashakulik]

People who generate love links for a group don't typically include themselves while deserving love just as much. Instead of sending love to them separately, or recreating a link to all plus that person (which people typically don't bother doing so the sender ends up underloved) it would be helpful if more recipients could be added to the existing link.

[Chinny1Y]

++ Upvoting this to ask for a way to update an existing love link with more details or to add an individual, without having to resend a new love link