added tabs to pageedit
added new css files
save and close buttons added to tabs row
group privileges separated into own tab
priv is emptied before fieldsets are added
lots of cleanup in namespaces and files
toolbar cleaned up
pageedit open/close button replaced by servicebar edit button
zable_servicebar renamed to zable_pagebar
css and translations cleaned up
color scheme corrected
css fine tuned
finished v2.3.0 where pageedit is split into tabs