TASKMAN-32: Update all documents with the new xar format

Please be more careful, as these are code modifications spanned through your xar formatting commit. They can either be code modifications + formatting OR they can be overriding previous modifications due not a not-synched working branch. The later case is the most dangerous of all, as you risk losing code by mistake!

Always make sure, when updating documents' xar format, that the XWiki instance you are exporting documents from and the branch you are committing into are synced.