Merge branch 'mm/mediawiki-tests'

* mm/mediawiki-tests: git-remote-mediawiki: be more defensive when requests fail git-remote-mediawiki: more efficient 'pull' in the best case git-remote-mediawiki: extract revision-importing loop to a function git-remote-mediawiki: refactor loop over revision ids git-remote-mediawiki: change return type of get_mw_pages git-remote-mediawiki (t9363): test 'File:' import and export git-remote-mediawiki: support for uploading file in test environment git-remote-mediawiki (t9362): test git-remote-mediawiki with UTF8 characters git-remote-mediawiki (t9361): test git-remote-mediawiki pull and push git-remote-mediawiki (t9360): test git-remote-mediawiki clone git-remote-mediawiki: test environment of git-remote-mediawiki git-remote-mediawiki: scripts to install, delete and clear a MediaWiki