FEATURE: add support for generic external avatar services

This changes it so we only ship an avatar template down to the client
it has no magic, all it knows is how to plug in size

app/serializers/basic_post_serializer.rb

@@ -4,8 +4,6 @@ class BasicPostSerializer < ApplicationSerializer
              :name,
              :username,
              :avatar_template,
-             :uploaded_avatar_id,
-             :letter_avatar_color,
              :created_at,
              :cooked,
              :cooked_hidden
@@ -22,14 +20,6 @@ class BasicPostSerializer < ApplicationSerializer
     object.user.try(:avatar_template)
   end
 
-  def uploaded_avatar_id
-    object.user.try(:uploaded_avatar_id)
-  end
-
-  def letter_avatar_color
-    object.user.try(:letter_avatar_color)
-  end
-
   def cooked_hidden
     object.hidden && !scope.is_staff?
   end

app/serializers/basic_user_serializer.rb

@@ -1,5 +1,5 @@
 class BasicUserSerializer < ApplicationSerializer
-  attributes :id, :username, :uploaded_avatar_id, :avatar_template, :letter_avatar_color
+  attributes :id, :username, :avatar_template
 
   def include_name?
     SiteSetting.enable_names?
@@ -17,12 +17,4 @@ class BasicUserSerializer < ApplicationSerializer
     object[:user] || object
   end
 
-  def letter_avatar_color
-    if Hash === object
-      User.letter_avatar_color(user[:username])
-    else
-      user.try(:letter_avatar_color)
-    end
-  end
-
 end

app/serializers/post_serializer.rb

@@ -177,9 +177,7 @@ class PostSerializer < BasicPostSerializer
   def reply_to_user
     {
       username: object.reply_to_user.username,
-      avatar_template: object.reply_to_user.avatar_template,
-      uploaded_avatar_id: object.reply_to_user.uploaded_avatar_id,
-      letter_avatar_color: object.reply_to_user.letter_avatar_color,
+      avatar_template: object.reply_to_user.avatar_template
     }
   end
 

app/serializers/user_action_serializer.rb

@@ -26,12 +26,8 @@ class UserActionSerializer < ApplicationSerializer
              :action_code,
              :edit_reason,
              :category_id,
-             :uploaded_avatar_id,
-             :letter_avatar_color,
              :closed,
-             :archived,
-             :acting_uploaded_avatar_id,
-             :acting_letter_avatar_color
+             :archived
 
   def excerpt
     cooked = object.cooked || PrettyText.cook(object.raw)
@@ -86,12 +82,4 @@ class UserActionSerializer < ApplicationSerializer
     object.topic_archived
   end
 
-  def letter_avatar_color
-    User.letter_avatar_color(username)
-  end
-
-  def acting_letter_avatar_color
-    User.letter_avatar_color(acting_username)
-  end
-
 end