Refactoring workers

Thanks @heynemann
Workers: Fixed nodata
Added bytes unit
Release 0.5.0
Review: fixed fact 'kb' unit'
Releasing 0.5.1
Ordering workers by id
release 0.5.2
Fixed h2 title from page review template
Fixed zero sized display on horizontal directive

(fix #33)
Bugfix in horizontal directive (fix #33).
Horizontal style: minor fix