add basic support for labels

app/models/label.rb

@@ -0,0 +1,11 @@
+class Label < ActiveRecord::Base
+  validates_presence_of :name
+  belongs_to :role
+  has_and_belongs_to_many :forums
+  has_many :forumthreads
+
+  def to_s
+    name.upcase
+  end
+
+end