Hey guys,
Somehow I missed that our Versions plugin in Confluence is incompatible to version 5... So, everything in the documentation space is kind of messed up right now.
We're terrible sorry for this, but after requesting information from K15t (the plugin maintainer) we got informed that a compatible version should be released mid of april (so every day now).
Therefore, to help avoiding the hours required to downgrade again we'll keep the situation as is for now. New documentation can be simply added to the misc space and moved ASAP the new plugin is available. Current documentation will remain not accessible for the next days though.
We're very sorry about any problems caused, and will keep you informed.
Kind regards,
Andreas