Merge pull request #434 from bryhoyt/peewee-form-overrides2

Save form_overrides into CustomModelConverter, to fix #421, in conjunction with https://github.com/coleifer/wtf-peewee/pull/20

flask_admin/contrib/peewee/form.py

@@ -90,6 +90,8 @@ class CustomModelConverter(ModelConverter):
         self.converters[DateField] = self.handle_date
         self.converters[TimeField] = self.handle_time
 
+        self.overrides = getattr(self.view, 'form_overrides', None) or {}
+
     def handle_foreign_key(self, model, field, **kwargs):
         loader = getattr(self.view, '_form_ajax_refs', {}).get(field.name)