UI improvements - email reply to fix

What's Changed

• Form Editor v2.5 by @chiragchhatrala in #599
• fix undefined error on integrations by @chiragchhatrala in #601
• improve email notfication migration by @chiragchhatrala in #602
• Fix email notification reply to by @chiragchhatrala in #603

Full Changelog: v1.4.0...v1.4.1