models: set more creator names explicitly.

Set creators explicitly for bans, BURs, comment votes, and posts.

app/models/bulk_update_request.rb

@@ -13,7 +13,6 @@ class BulkUpdateRequest < ApplicationRecord
   validate :script_formatted_correctly
   validate :forum_topic_id_not_invalid
   validate :validate_script, :on => :create
-  before_validation :initialize_attributes, :on => :create
   before_validation :normalize_text
   after_create :create_forum_topic
   after_save :update_notice
@@ -173,11 +172,6 @@ class BulkUpdateRequest < ApplicationRecord
     lines.join("\n")
   end
 
-  def initialize_attributes
-    self.user_id = CurrentUser.user.id unless self.user_id
-    self.status = "pending"
-  end
-
   def normalize_text
     self.script = script.downcase
   end