Make default user level and settings configurable.

Remove start_as_gold? and start_as_contributor? from default config
because they don't actually do anything. `git log -G start_as` indicates
they never have done anything.

Add a more general customize_new_user method for setting the starting
user level, permissions and defaults for any other settings.

app/models/user.rb

@@ -64,6 +64,7 @@ class User < ActiveRecord::Base
   after_save :update_cache
   after_update :update_remote_cache
   before_create :promote_to_admin_if_first_user
+  before_create :customize_new_user
   #after_create :notify_sock_puppets
   has_many :feedback, :class_name => "UserFeedback", :dependent => :destroy
   has_many :posts, :foreign_key => "uploader_id"
@@ -311,6 +312,10 @@ class User < ActiveRecord::Base
       end
     end
 
+    def customize_new_user
+      Danbooru.config.customize_new_user(self)
+    end
+
     def role
       case level
       when Levels::MEMBER

config/danbooru_default_config.rb

@@ -49,14 +49,19 @@ module Danbooru
       "choujin-steiner"
     end
 
-    # Set to true to give all new users gold access.
-    def start_as_gold?
-      false
-    end
-
-    # Set to true to give all new users contributor access.
-    def start_as_contributor?
-      false
+    # Set the default level, permissions, and other settings for new users here.
+    def customize_new_user(user)
+      # user.level = User::Levels::MEMBER
+      # user.can_approve_posts = false
+      # user.can_upload_free = false
+      # user.is_super_voter = false
+      #
+      # user.base_upload_limit = 10
+      # user.comment_threshold = -1
+      # user.blacklisted_tags = ["spoilers", "guro", "scat", "furry -rating:s"].join("\n")
+      # user.default_image_size = "large"
+      # user.per_page = 20
+      # user.disable_tagged_filenames = false
     end
 
     # What method to use to store images.