Fix failing tests due to changes in SystemdService#restart
Merge pull request #206 from vmoravec/master

Fix failing tests due to changes in SystemdService#restart
Moved misplaced code into address_tab. bnc880754
Updated changelog
Merge pull request #207 from mchf/bnc880754-internal-error

Internal error when creating tun/tap device
Put '/etc/HOSTNAME' into constant
Turned '/etc/HOSTNAME' -> '/etc/hostname'. bnc#858908

Purpose is to be cross platform compatible
Fixed testsuite
DNS module: cleanup
Updated testsuite
Small deduplication of DNS code
save_network: cleanup
Create symlink /etc/HOSTNAME to avoid backward compatibility issues.
Updated changelog
Merge pull request #208 from mchf/bnc858908-etc-hostname

Replaced /etc/HOSTNAME using cross platform /etc/hostname
Added state representing "no network service available" case.
Implemeneted disabling network service on demand
Extended and refactored disabling of unconfigureable items.
Fixed disabling items in routing dialog
Updated changelog