users: set default settings in ruby instead of in database.

Specify the default settings for new users inside the User model instead
of inside the database. This makes it easier to change defaults, and it
makes the code clearer.

app/controllers/users_controller.rb

@@ -63,6 +63,7 @@ class UsersController < ApplicationController
 
     @user = authorize User.new(
       last_ip_addr: CurrentUser.ip_addr,
+      last_logged_in_at: Time.zone.now,
       requires_verification: user_verifier.requires_verification?,
       level: user_verifier.initial_level,
       name: params[:user][:name],

app/models/user.rb

@@ -69,7 +69,36 @@ class User < ApplicationRecord
     is_verified
   )
 
+  DEFAULT_BLACKLIST = ["spoilers", "guro", "scat", "furry -rating:s"].join("\n")
+
+  attribute :id
+  attribute :created_at
+  attribute :updated_at
+  attribute :name
+  attribute :level, default: Levels::MEMBER
+  attribute :bcrypt_password_hash
+  attribute :inviter_id
+  attribute :last_logged_in_at, default: -> { Time.zone.now }
+  attribute :last_forum_read_at, default: "1960-01-01 00:00:00"
+  attribute :last_ip_addr
+  attribute :comment_threshold, default: 0
+  attribute :default_image_size, default: "large"
+  attribute :favorite_tags
+  attribute :blacklisted_tags, default: DEFAULT_BLACKLIST
+  attribute :time_zone, default: "Eastern Time (US & Canada)"
+  attribute :custom_style
+  attribute :post_upload_count, default: 0
+  attribute :post_update_count, default: 0
+  attribute :note_update_count, default: 0
+  attribute :unread_dmail_count, default: 0
+  attribute :favorite_count, default: 0
+  attribute :per_page, default: 20
+  attribute :theme, default: :light
+  attribute :upload_points, default: 1000
+  attribute :bit_prefs, default: 0
+
   has_bit_flags BOOLEAN_ATTRIBUTES, :field => "bit_prefs"
+  enum theme: { light: 0, dark: 100 }, _suffix: true
 
   attr_reader :password
 
@@ -122,7 +151,6 @@ class User < ApplicationRecord
   belongs_to :inviter, class_name: "User", optional: true
 
   accepts_nested_attributes_for :email_address, reject_if: :all_blank, allow_destroy: true
-  enum theme: { light: 0, dark: 100 }, _suffix: true
 
   # UserDeletion#rename renames deleted users to `user_<1234>~`. Tildes
   # are appended if the username is taken.