Merge branch 'mm/mediawiki-usability'

* mm/mediawiki-usability: git-remote-mediawiki: allow page names with a ':' git-remote-mediawiki: fix incorrect test usage in test git-remote-mediawiki: properly deal with invalid remote revisions git-remote-mediawiki: show progress information when getting last remote revision git-remote-mediawiki: show progress information when listing pages git-remote-mediawiki: use --force when adding notes git-remote-mediawiki: get rid of O(N^2) loop git-remote-mediawiki: make mediafiles export optional git-remote-mediawiki: actually send empty comment when they're empty git-remote-mediawiki: don't split namespaces with spaces