Multiple users of a single gateway.

[Callme Whatiwant]

I've noticed a multi-user gateway use case popping up in different scenarios.

Originally I was mainly aware of shared web gateways.  Recently there
have been efforts to create system wide daemons/services (on debian
and windows at least) where some of the same usability and security
issues arise.  For example, a system daemon should not have an aliases
file, and individual users probably want their own separate files.

So, I've added a keyword `multiuser-gateway` and crosslinked several tickets:

https://tahoe-lafs.org/trac/tahoe-lafs/query?status=assigned&status=new&status=reopened&keywords=~multiuser&order=priority

Ticket #2045 is about the general use case and security/usability issues:

https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2045

There are tickets focused on other things (Windows services, debian
services, readonly gateways, etc...) which overlap with this use case
area.

Regards,
Nathan