Merge remote-tracking branch 'tootsuite/master' into glitchsoc/master

db/migrate/20171129172043_add_index_on_stream_entries.rb

@@ -0,0 +1,7 @@
+class AddIndexOnStreamEntries < ActiveRecord::Migration[5.1]
+  def change
+    commit_db_transaction
+    add_index :stream_entries, [:account_id, :activity_type, :id], algorithm: :concurrently
+    remove_index :stream_entries, name: :index_stream_entries_on_account_id
+  end
+end