show userpage by 'login' rather than 'id'.
sometimes I need more human readable URL for my redmine account. for example,
http://www.redmine.org/account/show/sio4 (meet 404 page)
how about this? and one more step forward, more fency version is,
If redmine is used for development portal or something like *forge, it will be very useful function. (and I can write this URL on my blogs. "hey, I contributed on great open source project called redmine, here is my page! http://www.redmine.org/u/sio4")
...and here is a quick and dirty patch.