Fix urls based on current frontend requests

VRE/apps/study/urls.py

@@ -4,8 +4,8 @@ from .views import Contributors, process_study_invite, validate_study_invite
 
 urlpatterns = [
     path('<int:study_id>/contributors/', Contributors.as_view({'get': 'list'}), name='study-contributors'),
-    path('<int:study_id>/contributors/<int:contributor_id>/', Contributors.as_view({'get': 'get', 'put': 'update', 'delete': 'delete'}), name='study-contributors'),
+    path('<int:study_id>/contributors/<int:contributor_id>/', Contributors.as_view({'get': 'get', 'put': 'update', 'post': 'update', 'delete': 'delete'}), name='study-contributors'),
 
-    path('<int:study_id>/invite/', process_study_invite, name='study-invite'),
+    path('<int:study_id>/contributor/invite/', process_study_invite, name='study-invite'),
     path('<int:study_id>/join/<path:jwt_token>', validate_study_invite, name='study-invite-join'),
 ]

VRE/apps/study/views.py

@@ -174,7 +174,7 @@ class Studies(ModelViewSet):
 
 
 class Contributors(ModelViewSet):
-    http_method_names = ['get', 'put', 'delete']
+    http_method_names = ['get', 'put', 'post', 'delete']
     queryset = StudyRole.objects.all()
     serializer_class = ContributorSerializer