Added VNC support into network/firewall setup in installation-first stage

- See bnc#734264
Changes file update and new version
Fixed typo in comment
Firewall dialog made more understandable and also VNC summary has been added into the proposal
Added some .gitignore files to ignore automatically created links

- List is still not complete TBD
Constant-ized
Constant-ized also firewall dialog link
Added removed asterisk :)
Adapted testsuite to the latest Service module state
Adapted BuildRequires

- That's related to new Service module and adapted testsuite
Fixed requiring packages for installation

- If firewall is enabled, firewall package is required for installation
- If SSH service is enabled, SSH package is required for installation
- This change fixes the behavior in a way that these requirements
  are removed if service is diabled
Merge pull request #46 from kobliha/master

Added support for VNC in network/firewall configuration in first stage of installation (bnc#795929)