Fix event pre-filling for wish submission and hide link field

AKSubmission/forms.py

@@ -108,7 +108,7 @@ class AKEditForm(AKForm):
 
 class AKWishForm(AKSubmissionForm):
     class Meta(AKForm.Meta):
-        exclude = ['owners']
+        exclude = ['owners', 'link']
 
 
 class AKOwnerForm(forms.ModelForm):

AKSubmission/views.py

@@ -142,6 +142,11 @@ class AKWishSubmissionView(AKAndAKWishSubmissionView):
     template_name = 'AKSubmission/submit_new_wish.html'
     form_class = AKWishForm
 
+    def get_initial(self):
+        initials = super(AKAndAKWishSubmissionView, self).get_initial()
+        initials['event'] = self.event
+        return initials
+
 
 class AKEditView(EventSlugMixin, UpdateView):
     model = AK