[ui][views/registration-templates] add quick link accept for new supervisor...

[ui][views/registration-templates] add quick link accept for new supervisor for already valid supervisee

beat/web/ui/registration/templates/registration/mail.supervisor_validation_supervisee_add_request.message.txt

@@ -12,6 +12,9 @@ Username: {{ supervisee.username }}
 If you don't do this the supervisee will not be able to use his account in
 future and will not be recognized as your supervisee.
 
+You can also click on the following direct link to accomplish this action and accept this new supervisee
+at {{ prefix }}/accounts/validation/{{ temp_url }}
+
 If you are having problems to activate your supervisee account, contact a member of our
 support staff at {{ prefix }}{% url 'contact' %}.
 

beat/web/ui/views.py

@@ -46,7 +46,9 @@ from rest_framework.authtoken.models import Token
 
 from ..import __version__
 from ..common.models import Shareable
-from ..accounts.models import Profile, SupervisionTrack
+from ..accounts.models import Profile
+from ..accounts.models import SupervisionTrack
+from ..accounts.models import TemporaryUrl
 from ..utils import mail
 
 from .registration.forms import BlockedUserRevalidationForm
@@ -132,10 +134,12 @@ def blocked_user_reactivation(request):
                                 parsed_url = urlparse(settings.URL_PREFIX)
                                 server_address = '%s://%s' % (parsed_url.scheme, parsed_url.hostname)
 
+                                temp_url = TemporaryUrl.objects.create_temporary_url(TemporaryUrl.VALIDATION, supervisiontrack)
                                 context = {
                                     'supervisor': supervisor,
                                     'supervisee': supervisee,
                                     'prefix': server_address,
+                                    'temp_url': temp_url.url_hash,
                                 }
 
                                 mail.send_email('registration/mail.supervisor_validation.subject.txt',