#41 skz themes should be unpacked

[J.J.García]

When they are clicked they should be unpacked to
~/.kde/share/apps/superkaramba/themes, for
some reasons I will explain:

1) SuperKaramba startup time will be greatly
improved, as the themes are already unpacked.

2) By uninstalling a theme "installed" by clicking on
a skz theme, it deletes the skz theme. I think this
will annoy more than one user. IMHO "Uninstall"
should
delete the files unpacked in
~/.kde/share/apps/superkaramba/themes when the
skz was clicked.

3) For SuperKaramba developers it's a hell to
open or execute scripts inside the skz file. Please
take a look at the LiquidWeather++ source; you
will see it needs to copy the configuration program
(and modules used by it) to ~/.superkaramba and
then execute it. This is a ugly hack.

Please solve this before releasing a final 0.37, or
other theme developers will begin to write ugly
hacks in their widgets.