Feature: show an invite button to registered students without teams. (#554)
Feature: show an invite button to registered students without teams. (#554)

* Feature: show an invite button to registered students without teams.

* Fix: remove wait for confirmation message from registered students.

* undo indentation changes

nusskylab/nusskylab,nusskylab/nusskylab,nusskylab/nusskylab,nusskylab/nusskylab