FIX: Badge and user title interaction fixes (#8282)

* Fix user title logic when badge name customized
* Fix an issue where a user's title was not considered a badge granted title when the user used a badge for their title and the badge name was customized. this affected the effectiveness of revoke_ungranted_titles! which only operates on badge_granted_titles.
* When a user's title is set now it is considered a badge_granted_title if the badge name OR the badge custom name from TranslationOverride is the same as the title
* When a user's badge is revoked we now also revoke their title if the user's title matches the badge name OR the badge custom name from TranslationOverride
* Add a user history log when the title is revoked to remove confusion about why titles are revoked
* Add granted_title_badge_id to user_profile, now when we set badge_granted_title on a user profile when updating a user's title based on a badge, we also remember which badge matched the title
* When badge name (or custom text) changes update titles of users in a background job
* When the name of a badge changes, or in the case of system badges when their custom translation text changes, then we need to update the title of all corresponding users who have a badge_granted_title and matching granted_title_badge_id. In the case of system badges we need to first get the proper badge ID based on the translation key e.g. badges.regular.name
* Add migration to backfill all granted_title_badge_ids for both normal badge name titles and titles using custom badge text.

db/migrate/20191031052711_add_granted_title_badge_id_to_user_profile.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+class AddGrantedTitleBadgeIdToUserProfile < ActiveRecord::Migration[6.0]
+  def up
+    add_reference :user_profiles, :granted_title_badge, foreign_key: { to_table: :badges }, index: true, null: true
+
+    # update all the regular badge derived titles based
+    # on the normal badge name
+    ActiveRecord::Base.connection.execute <<-SQL
+      UPDATE user_profiles
+      SET granted_title_badge_id = b.id
+      FROM users
+      INNER JOIN badges b ON users.title = b.name
+      WHERE users.id = user_profiles.user_id
+        AND user_profiles.granted_title_badge_id IS NULL
+    SQL
+
+    # update all of the system badge derived titles where the
+    # badge has had custom text set for it via TranslationOverride
+    ActiveRecord::Base.connection.execute <<-SQL
+      UPDATE user_profiles
+      SET granted_title_badge_id = badges.id
+      FROM users
+      JOIN translation_overrides ON translation_overrides.value = users.title
+      JOIN badges ON ('badges.' || LOWER(REPLACE(badges.name, ' ', '_')) || '.name') = translation_overrides.translation_key
+      JOIN user_badges ON user_badges.user_id = users.id AND user_badges.badge_id = badges.id
+      WHERE users.id = user_profiles.user_id
+        AND user_profiles.granted_title_badge_id IS NULL
+    SQL
+  end
+
+  def down
+    remove_column :user_profiles, :granted_title_badge_id
+  end
+end