Sign in as user and/or generate app token for user as superadmin #19058

Summary

As a superuser, to connect new wordpress websites to the self-hosted matomo (docker) service, a superuser has to do the following:

1. Create website
2. Create new user & connect user to the new website
3. Logout as superadmin
4. Login as the new user
5. Generate app token
6. Add app token to wordpress.
7. Logout as new user
8. Login as superadmin

- - The following is requested with this feature:

• Sign in as user

1. Create website
2. Create new user & connect user to the new website
3. Sign in as new user (button click)
4. Generate app token
5. Add app token to wordpress
6. Return to superadmin (button click)

• Generate app token as superadmin for user (Preferred)

1. Create website
2. Create new user & connect user to the new website
3. Generate app token for user
4. Add app token to wordpress