Ignore pid and log files.
added info about auto_build_stable target.
Added functionality to measure build time. Only download missing packages if they are not available yet.
Merge branch 'feature/measure-build-time' into development
Renamed cleanall to distclean.
Removed WWW target and merged functionality to run_repository_all target.
Removed target, merged dunctionality to create_piratebox_script_image target.
Added line to info
Merge branch 'feature/refactoring' into development