(*) slices list has links towards the slice page with the details area closed and...

(*) slices list has links towards the slice page with the details area closed and the nodes area open
(*) slice page reviewed for displaying node status and optional node tags
tags displayed are the ones for which the category matches 'node*/ui*'
the category may also convey tunings for rendering the column
(*) cosmetics in the slice page renewal area
(*) nodegroups : UI can now add/delete/update nodegroups
managing the contents of a nodegroup still can be tedious though
(*) tag page fixed, slice/sliver count was wrong, was not showing nodegroups