Change trending hashtags to not disappear instantly after midnight (#11712)

db/post_migrate/20190901040524_remove_score_from_tags.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class RemoveScoreFromTags < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    safety_assured do
+      remove_column :tags, :score, :int
+      remove_column :tags, :last_trend_at, :datetime
+    end
+  end
+end