Break cycle introduced by the fix to bnc#893501 in yast2-installation
Merge pull request #241 from ancorgs/remove_installation_dep

Break cycle introduced by the fix to bnc#893501 in yast2-installation
Refactoring network autoconfiguration. bnc#886434

Configuration used to be reloaded one-by-one for multiple devices.
Reload is issued just once since now.
Updated changelog
Updated doc.