convert GUI palette to json\
User palette setting is broken
man page updates
Effects: remove XX comment
Fade: comment about weird comment
Graphical_subs.pl: fix Palette button
rename $config->{no_fade_mute_delay} -> engine_muting_time
re-enable restoring edits fromsaved states
Track: track rw status is OFF if set to REC but JACK client is not available
grammar_body.pl: remove obsolete code
section on saving/restoring
comment singleton_keys, remove obsolete keys and code
remove unused hash keys and code
add dependence on JSON::XS
bump version to 1.103