theme cleanups and hidpi branch merged

[Marco Martin]

On Tuesday 28 January 2014, Sebastian Kügler wrote:
> before: http://vizzzion.org/stuff/plasma/battery-no-scaling.png
> after: http://vizzzion.org/stuff/plasma/battery-scaling.png
> 
> An experiment that shows roughly what we can make happen automatically.
> (Obviously, as this is all rendered onto the same screen, some limitations
> apply, but you should get the idea nevertheless.) In this screenshot, I've
> also hacked the slider to scale with the devicePixelRatio:
> http://vizzzion.org/stuff/plasma/scaling-3.png

another thing i want to try, i'll give a run now, is to apply a similar tings 
into svgitem/framesvgitem

since most of the themes ditched most of the embedded pixmaps, it *should* 
look good... but has to be tried to make sure ;)

-- 
Marco Martin