clean up stream directory structure

app/controllers/aspects_controller.rb

@@ -2,7 +2,7 @@
 #   licensed under the Affero General Public License version 3 or later.  See
 #   the COPYRIGHT file.
 
-require File.join(Rails.root, "lib", "aspect_stream")
+require File.join(Rails.root, "lib", 'streams', "aspect_stream")
 
 class AspectsController < ApplicationController
   before_filter :authenticate_user!

app/controllers/mentions_controller.rb

@@ -1,4 +1,9 @@
-require File.join(Rails.root, '/lib/mention_stream')
+#   Copyright (c) 2010-2011, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+require File.join(Rails.root, 'lib','streams', 'mention_stream')
+
 class MentionsController < ApplicationController
   before_filter :authenticate_user!
   before_filter :save_sort_order, :only => :index

app/controllers/tag_followings_controller.rb

@@ -1,4 +1,9 @@
-require File.join(Rails.root, '/lib/tag_stream')
+#   Copyright (c) 2010-2011, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+#
+require File.join(Rails.root, 'lib', 'streams', 'tag_stream')
+
 class TagFollowingsController < ApplicationController
   before_filter :authenticate_user!
   before_filter :save_sort_order, :only => :index

lib/streams/mention_stream.rb

@@ -1,7 +1,7 @@
 #   Copyright (c) 2010-2011, Diaspora Inc.  This file is
 #   licensed under the Affero General Public License version 3 or later.  See
 #   the COPYRIGHT file.
-
+require 'base_stream'
 class MentionStream< BaseStream
 
 

lib/streams/tag_stream.rb

@@ -2,6 +2,7 @@
 #   licensed under the Affero General Public License version 3 or later.  See
 #   the COPYRIGHT file.
 
+require 'base_stream'
 class TagStream < BaseStream
 
   def link(opts={})