fix service user migration

db/migrate/20120510184853_drop_service_users.rb

 class DropServiceUsers < ActiveRecord::Migration
   def up
-    drop_table :services_users
+    drop_table :service_users
 
   end
 

db/schema.rb

@@ -107,6 +107,8 @@ ActiveRecord::Schema.define(:version => 20120510184853) do
     t.datetime "updated_at"
   end
 
+  add_index "conversations", ["author_id"], :name => "conversations_author_id_fk"
+
   create_table "invitation_codes", :force => true do |t|
     t.string   "token"
     t.integer  "user_id"
@@ -144,6 +146,7 @@ ActiveRecord::Schema.define(:version => 20120510184853) do
     t.string   "target_type",             :limit => 60,                   :null => false
   end
 
+  add_index "likes", ["author_id"], :name => "likes_author_id_fk"
   add_index "likes", ["guid"], :name => "index_likes_on_guid", :unique => true
   add_index "likes", ["target_id", "author_id", "target_type"], :name => "index_likes_on_target_id_and_author_id_and_target_type", :unique => true
   add_index "likes", ["target_id"], :name => "index_likes_on_post_id"
@@ -169,6 +172,7 @@ ActiveRecord::Schema.define(:version => 20120510184853) do
   end
 
   add_index "messages", ["author_id"], :name => "index_messages_on_author_id"
+  add_index "messages", ["conversation_id"], :name => "messages_conversation_id_fk"
 
   create_table "notification_actors", :force => true do |t|
     t.integer  "notification_id"
@@ -200,7 +204,7 @@ ActiveRecord::Schema.define(:version => 20120510184853) do
     t.text   "data",                 :null => false
   end
 
-  add_index "o_embed_caches", ["url"], :name => "index_o_embed_caches_on_url"
+  add_index "o_embed_caches", ["url"], :name => "index_o_embed_caches_on_url", :length => {"url"=>255}
 
   create_table "oauth_access_tokens", :force => true do |t|
     t.integer  "authorization_id",                :null => false
@@ -392,23 +396,6 @@ ActiveRecord::Schema.define(:version => 20120510184853) do
     t.datetime "updated_at"
   end
 
-  create_table "service_users", :force => true do |t|
-    t.string   "uid",                          :null => false
-    t.string   "name",                         :null => false
-    t.string   "photo_url",                    :null => false
-    t.integer  "service_id",                   :null => false
-    t.integer  "person_id"
-    t.integer  "contact_id"
-    t.integer  "request_id"
-    t.integer  "invitation_id"
-    t.datetime "created_at"
-    t.datetime "updated_at"
-    t.string   "username",      :limit => 127
-  end
-
-  add_index "service_users", ["service_id"], :name => "index_service_users_on_service_id"
-  add_index "service_users", ["uid", "service_id"], :name => "index_service_users_on_uid_and_service_id", :unique => true
-
   create_table "services", :force => true do |t|
     t.string   "type",          :limit => 127, :null => false
     t.integer  "user_id",                      :null => false