I don't want to scare away editors with scary warnings about almost certainly harmless files, how to turn this feature off? https://www.mediawiki.org/wiki/Manual:File_page_warnings
MediaWiki
Gerrit change 194565 creates a framework for adding warnings about different file types to file pages. Here's how to implement it:
Add messages for the warning. There will be a maximum of four, only one of them is required:
'main' - this will be the text of the warning.
'header' - a title for the warning to grab the user's attention
'footer' - ...