[groups] wrong redirect

[Daniel Zoller]

after dismissing a group invite or removing a group request the controller redirects to group settings page and not to the user settings page

[Thomas Niebler]

fix #2374 redirect to settings page

→ <<cset 1970f0d06044>>

[Former user]

fix #2374 redirect to settings page

→ <<cset 1970f0d06044>>