task manager lines instead of blocks

[Kai Uwe Broulik]

Hi,

I also liked the lines better especially since we now have lines everywhere (open plasmoid, system tray, tabs) except task manager.

Be careful when messing with tasks.svgz as it's quite easy to screw up the puddings in there.

As for the icons I prefer the colored tab icons on Kickoff but the leave icons should be black and white everywhere (not just in Kickoff, but they look pretty bad on the shutdown screen too) imho.

Cheers, 
Kai Uwe