About: Add action on maintenance page, reset all the levels of confidentiality for all photos in the gallery 'for all'
Compatible with: 13, 12
New languages: Deutsch [DE]Українська [UA]Slovenščina [SL] Total : 22
update for piwigo 12
New languages:
* German (Deutsch [DE])
* Slovenian (Slovenščina [SL])
* Ukrainian (Українська [UA])