reorganize functions to build markdown of commands list and doc
adapt to GitHub's Markdown syntax
display link to list commands
make sure text sent is not truncated
fix broken help on uppercase commands / don't hide more command anymore
allow to exclude specific commands per chan from conf
conf option to avoid automatic stats and tweet reminders displays
unify start/stop/restart script / update README + install infos
display info in -nologs if crashed
catch icerocket bug
generalize chan handling
more examples + ortho
update list_commands