add yardopts to allow easy autogeneration
update gitignore
convert features documentation
convert control file doc to markdown
update gitignore
fix yard warning
add inst files documentation
fix typo
update control file locations
improve visibility of elements
convert tabs to spaces
fix indentation
control file cleanup: removed autoconfiguration support

the 2nd stage has been removed completely
control file cleanup: removed commented out parts, reformatting
control file cleanup: repair mode removed (not supported)
control file cleanup: remove the 2nd stage in installation
control file cleanup: removed tv and bluetooth from HW proposal

the modules have been dropped
control file cleanup: removed x11 proposal and clone module

(X11 is autoconfigured now, Yast config is not needed)
control file examples: "proposal_module" values do not contain "_proposal" suffix
control file cleanup: removed control file examples