Refactor user management app

Add keyword arguments.

Update view resolutions and URL parameters to the '_id' form.

Remove code from create and edit subclasses and user
the super class error checking.

Cache the view object instead of using .get_object()
every time.

Movernize tests.

Update views to comply with MERCs 5 and 6.

Split UserTestMixin into mixins for Groups and Users tests.

Add super delete and detail tests.

Remove redundant superuser filtering from views.

Add transactions to views that also commit events.

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/user_management/methods.py

@@ -4,4 +4,6 @@ from django.shortcuts import reverse
 
 
 def method_get_absolute_url(self):
-    return reverse(viewname='user_management:user_details', args=(self.pk,))
+    return reverse(
+        viewname='user_management:user_details', kwargs={'user_id': self.pk}
+    )