Extension:WarnNotRecentlyUpdated

The WarnNotRecentlyUpdated extension checks the last modified date of content pages and print a warning if the page is older than a specific delay.

The intent is to be used for manuals/checklists/documentation for teams where information is known to rot quickly, and where there is a very good chance information older than a certain age can be legacy or are dangerous to trust:
 * network/devops/SRE/operations/systems/infrastructure
 * legal content
 * fiscal content

Installation
'''Extension code isn't currently available, as the repository still need to be created. Once done, this procedure can be used.'''

Configuration parameters

 * $wgWarnNotRecentlyUpdatedDelay: the delay in seconds for a page to be considered fresh; by default, 31 536 000 seconds (one year)
 * $wgWarnNotRecentlyUpdatedPages: an array of pages prefix by namespace where the warning should apply

Interface parameters
The MediaWiki:WarnNotRecentlyUpdatedMessage is displayed if the page belongs to one of the prefixes and has been updated a greater delay than configured.