implement new invitation system

* fix comments on the frontend
* move jwt token service to its own module
* other fixes and updates

apps/server/src/integrations/transactional/partials/partials.tsx

@@ -40,7 +40,7 @@ export function MailFooter() {
     <Section style={footer}>
       <Row>
         <Text style={{ textAlign: 'center', color: '#706a7b' }}>
-          © {new Date().getFullYear()}, All Rights Reserved <br />
+          © {new Date().getFullYear()} Docmost, All Rights Reserved <br />
         </Text>
       </Row>
     </Section>