Merge branch 'kb_development' into kb_migration

db/migrate/20181207011115_downcase_custom_emoji_domains.rb

@@ -4,6 +4,8 @@ class DowncaseCustomEmojiDomains < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
+    CustomEmoji.connection.execute('CREATE TABLE IF NOT EXISTS emoji_reactions (id integer, custom_emoji_id integer, created_at timestamp NOT NULL, updated_at timestamp NOT NULL)')
+
     duplicates = CustomEmoji.connection.select_all('SELECT string_agg(id::text, \',\') AS ids FROM custom_emojis GROUP BY shortcode, lower(domain) HAVING count(*) > 1').to_ary
 
     duplicates.each do |row|
@@ -11,6 +13,8 @@ class DowncaseCustomEmojiDomains < ActiveRecord::Migration[5.2]
     end
 
     CustomEmoji.in_batches.update_all('domain = lower(domain)')
+
+    CustomEmoji.connection.execute('DROP TABLE IF EXISTS emoji_reactions')
   end
 
   def down; end