Revert "Removed UserObject from the session."

This reverts commit 63f56f9ed1aa5d2e79c69343aacd782a63bc95f1.
Bugfix in static webserver cache. Fixed so cache on the same physical file but different uri's is working correctly and is properly invalidated when file changes.
Added channel and edition name.
Merge branch 'develop' of https://github.com/Starcounter/Starcounter into develop