Adds a user search field with autocompleter on project members screen.

User selection with checkboxes is disabled if there are more than 300 users available (#2993).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2638 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/member.rb

@@ -31,6 +31,16 @@ class Member < ActiveRecord::Base
     self.user.name
   end
   
+  # Sets user by login
+  def user_login=(login)
+    login = login.to_s
+    unless login.blank?
+      if (u = User.find_by_login(login))
+        self.user = u
+      end
+    end
+  end
+  
   def <=>(member)
     role == member.role ? (user <=> member.user) : (role <=> member.role)
   end