added setting variables for custom templates

Author: m.davino

djangosaml2/views.py

@@ -110,9 +110,9 @@ class LoginView(SPConfigMixin, View):
         will be rendered.
     """
 
-    wayf_template = 'djangosaml2/wayf.html'
-    authorization_error_template = 'djangosaml2/auth_error.html'
-    post_binding_form_template = 'djangosaml2/post_binding_form.html'
+    wayf_template = getattr(settings,'SAML2_CUSTOM_WAYF_TEMPLATE','djangosaml2/wayf.html')
+    authorization_error_template = getattr(settings,'SAML2_CUSTOM_AUTHORIZATION_ERROR_TEMPLATE','djangosaml2/auth_error.html')
+    post_binding_form_template = getattr(settings,'SAML2_CUSTOM_POST_BINDING_FORM_TEMPLATE','djangosaml2/post_binding_form.html')
 
     def get_next_path(self, request: HttpRequest) -> str:
         ''' Returns the path to put in the RelayState to redirect the user to after having logged in.