repos and kickstarts for pa4

[Marco Martin]

Hi all,

we have a new stable option for images creation.

in the plasma-active-kickstart git repo, there is a new yaml for image 
creation.

so, if you do

mer-kickstarter -e . -c releases/plasma-active-4.yaml -o plasma-active-latest-
ks/

it will generate kickstarts from kde:stable:* and "fixed" releases for nemo 
and mer. this will be the basis of pa4.

also, new repositories are enabled in the image:
* mer-updates: it will contain bugfix updates for the base system if neede 
(hopefully none)
* kde:apps : it will contain 3rd party apps and packages based on kde. being 
enabled on pa4 new packages can land there post release and will be easy 
installable on pa4 systems

hopefully there will be soon images based on this kickstart

Cheers,
Marco Martin