Enable anonymizeIP for google analytics.
Rename doku-zug.ch/footer.css to .scss to fix asset precompilation.
Make right sidebar a bit smaller again to get two columns in welcome page on 1400px screen.
Revert "Drop vendored in jquery{-ui,_ujs,$}."

This reverts commit e9e357e259e1a510f5fa58bcc27ca88310ffbb00.