Work in progress, keeping avatars locally

This introduces a new model to store the avatars and 3 uploads per user (gravatar, system and custom)

user can then pick which they want.

db/fixtures/005_users.rb

@@ -23,3 +23,8 @@ User.seed do |u|
   u.email_private_messages = false
   u.trust_level = TrustLevel.levels[:elder]
 end
+
+# download avatars for existing users
+if UserAvatar.count < User.count
+  Jobs.enqueue(:create_missing_avatars)
+end

db/migrate/20140520063859_remove_has_custom_avatar_from_user_stats.rb

@@ -0,0 +1,5 @@
+class RemoveHasCustomAvatarFromUserStats < ActiveRecord::Migration
+  def change
+    remove_column :user_stats, :has_custom_avatar
+  end
+end

db/migrate/20140522003151_add_user_avatars.rb

@@ -0,0 +1,12 @@
+class AddUserAvatars < ActiveRecord::Migration
+  def change
+    create_table :user_avatars do |t|
+      t.integer :user_id, null: false
+      t.integer :system_upload_id
+      t.integer :custom_upload_id
+      t.integer :gravatar_upload_id
+      t.datetime :last_gravatar_download_attempt
+      t.timestamps
+    end
+  end
+end