Missing methods get_author and get_modified_date in admin #302
Description
Hi, an error is raised when enabling djangocms-versionning with djangocms-alias, due to those lines:
djangocms-alias/djangocms_alias/admin.py
Lines 43 to 45 in 67fb17d
[...]
The value of 'list_display[4]' refers to 'get_author' which is not a callable or attribute of 'AliasAdmin',
[...]