Event entity created

Observe issue, merge request, note creation - create event
register push event

db/migrate/20120228130210_create_events.rb

@@ -0,0 +1,14 @@
+class CreateEvents < ActiveRecord::Migration
+  def change
+    create_table :events do |t|
+      t.string :target_type, :null => true
+      t.integer :target_id, :null => true
+
+      t.string :title, :null => true
+      t.text :data, :null => true
+      t.integer :project_id, :null => true
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20120228134252_add_action_to_event.rb

@@ -0,0 +1,5 @@
+class AddActionToEvent < ActiveRecord::Migration
+  def change
+    add_column :events, :action, :integer, :null => true
+  end
+end