Remove package lists

  - Package lists are a a matter of user choice. So I removed them from here.
Many tools improvements.

- Add general runtime controls;

- Implement the same method as DRP scripts to load settings from rc files or use the default ones;

- Add rc.sample files to luckybackup-net and trkpkg.

trkpkg:

- Generate the lists to a well know place (/etc/drp/pkglist.d) where it can be kept under VCS and used later by the DRP scripts;

- Improve package lists generation with more reliable methods;

- Add some output.
Improvements to DRP scripts.

  - Get the trkpkg generated package lists from a well know place (/etc/drp/pkglist.d);

  - Skip video and network card settings in DRP Phase 5, as a new hardware could have different ones;

  - Fix typos.
Tools improvements.

  - Add luckyBackup profiles and filters examples for user reference.
DRP improvements.

  - Add a 'Source box preparation' to user documentation.

  - Fix some links.

  - Remove an unnecessary  step in DRP phase 5a.