Revert "Revert "Merge branch 'master' of https://github.com/discourse/discourse""

This reverts commit 20780a1eeed56b321daf18ee6bbfe681a51d1bf4.

* SECURITY: re-adds accidentally reverted commit:
  03d26cd6: ensure embed_url contains valid http(s) uri
* when the merge commit e62a85cf was reverted, git chose the 2660c2e2 parent to land on
  instead of the 03d26cd6 parent (which contains security fixes)

lib/freedom_patches/translate_accelerator.rb

@@ -164,7 +164,7 @@ module I18n
 
       by_site[locale].with_indifferent_access
     rescue ActiveRecord::StatementInvalid => e
-      if PG::UndefinedTable === e.cause
+      if PG::UndefinedTable === e.cause || PG::UndefinedColumn === e.cause
         {}
       else
         raise