How can a module be uninstalled?  There is a way
to disable a module, but how can it be uninstalled
totally without going to the filesystem and
deleting it?  It seems there should be a way
because there is an update/backup directory, but
it is not apparent from the ui.  Perhaps it should
be seen from Tools->Options, update center, and
setup wizard manipulation of modules.  There is a
Delete item in the right click menu in
tools->options, but it is always disabled, as far
as I can tell.

Also, this should be accessible from user
installed modules and globally installed ones.