after_initialize callback for plugins

config/application.rb

@@ -125,9 +125,12 @@ module Discourse
       Discourse.activate_plugins!
     end
 
-    # So open id logs somewhere sane
     config.after_initialize do
+      # So open id logs somewhere sane
       OpenID::Util.logger = Rails.logger
+      if plugins = Discourse.plugins
+        plugins.each{|plugin| plugin.notify_after_initialize}
+      end
     end
 
     # This is not really required per-se, but we do not want to support

lib/plugin/instance.rb

@@ -67,6 +67,19 @@ class Plugin::Instance
     File.dirname(path) << "/auto_generated"
   end
 
+  def after_initialize(&block)
+    @after_initialize ||= []
+    @after_initialize << block
+  end
+
+  def notify_after_initialize
+    if @after_initialize
+      @after_initialize.each do |callback|
+        callback.call
+      end
+    end
+  end
+
   def register_css(style)
     @styles ||= []
     @styles << style