additional functional tests, some controller fixes

app/models/artist.rb

@@ -7,6 +7,7 @@ class Artist < ActiveRecord::Base
   belongs_to :creator, :class_name => "User"
   has_many :members, :class_name => "Artist", :foreign_key => "group_name", :primary_key => "name"
   has_many :urls, :dependent => :destroy, :class_name => "ArtistUrl"
+  has_many :versions, :order => "artist_versions.id", :class_name => "ArtistVersion"
   has_one :wiki_page, :foreign_key => "title", :primary_key => "name"
   has_one :tag_alias, :foreign_key => "antecedent_name", :primary_key => "name"
   accepts_nested_attributes_for :wiki_page

app/models/ban.rb

@@ -38,6 +38,14 @@ class Ban < ActiveRecord::Base
     end
   end
   
+  def user_name
+    user ? user.name : nil
+  end
+  
+  def user_name=(username)
+    self.user_id = User.name_to_id(username)
+  end
+  
   def duration=(dur)
     self.expires_at = dur.to_i.days.from_now
     @duration = dur