Add afs_group to changelog and fix filtering

- version 0.0.71, stable, low
- filtering also for usersFromPerun not only afs users
Merge pull request #321 from stavamichal/afs_group_changelog

Add afs_group to changelog and fix filtering
GUI: fixed application form

- Do not move app form down if linker is not present.
- Use "No, thanks" instead of "Cancel" when user is offered to join
  identities on registration form.
Merge pull request #351 from zlamalp/registrar_fix

GUI: fixed application form

- Do not move app form down if linker is not present.
- Use "No, thanks" instead of "Cancel" when user is offered to join identities on registration form.