[Feature Request] Allow a comment or description for documenting share/upload links.

[m4v]

For documenting share links, in particular links that are not meant to be temporary (those that don't have or have long expiration dates).

I would like a comment/description to remind me why I created such link, that should be visible in the list of shared links of the user and in the seafile admin panel.

My user case is that I have created several share links, some are used for sharing some files temporally (I pass the link through email or instant msgs) and some are meant to be permanent since they're used in some documents, and after I while I forget the purpose of the link (was this a link I created for a temporal purpose and forgot to set an expiration date or this is still in use and should be left alone?)