add columns for media comments so the user can be the context

also fixed some migrations

Change-Id: I8067f9d51328baaf566d32ea054f77bcead185dc
Reviewed-on: https://gerrit.instructure.com/5094
Tested-by: Hudson <hudson@instructure.com>
Reviewed-by: Zach Wily <zach@instructure.com>

db/migrate/20110405210006_web_conference_settings.rb

@@ -4,6 +4,6 @@ class WebConferenceSettings < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :web_conferences, :settings
+    remove_column :web_conferences, :settings
   end
 end

db/migrate/20110601222447_conversation_tweaks.rb

@@ -4,6 +4,6 @@ class ConversationTweaks < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :conversation_participants, :last_authored_at
+    remove_column :conversation_participants, :last_authored_at
   end
 end

db/migrate/20110609212540_message_attachments_and_media_objects.rb

@@ -7,9 +7,9 @@ class MessageAttachmentsAndMediaObjects < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :conversations, :has_attachments
-    drop_column :conversations, :has_media_objects
-    drop_column :conversation_participants, :has_attachments
-    drop_column :conversation_participants, :has_media_objects
+    remove_column :conversations, :has_attachments
+    remove_column :conversations, :has_media_objects
+    remove_column :conversation_participants, :has_attachments
+    remove_column :conversation_participants, :has_media_objects
   end
 end

db/migrate/20110801080015_message_forwards.rb

@@ -4,6 +4,6 @@ class MessageForwards < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :conversation_messages, :forwarded_message_ids
+    remove_column :conversation_messages, :forwarded_message_ids
   end
 end

db/migrate/20110803192001_unread_counts.rb

@@ -14,6 +14,6 @@ class UnreadCounts < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :users, :unread_conversations_count
+    remove_column :users, :unread_conversations_count
   end
 end

db/migrate/20110804195852_label_conversations.rb

@@ -4,6 +4,6 @@ class LabelConversations < ActiveRecord::Migration
   end
 
   def self.down
-    drop_column :conversation_participants, :label
+    remove_column :conversation_participants, :label
   end
 end

db/migrate/20110816152405_new_inbox_media_comments.rb

@@ -0,0 +1,11 @@
+class NewInboxMediaComments < ActiveRecord::Migration
+  def self.up
+    add_column :conversation_messages, :media_comment_id, :string
+    add_column :conversation_messages, :media_comment_type, :string
+  end
+
+  def self.down
+    remove_column :conversation_messages, :media_comment_id
+    remove_column :conversation_messages, :media_comment_type
+  end
+end