Map envelope parameters to more reasonable units

LMMS uses [0..1] for all ranges.  Instead we:
- Map durations to seconds
- Invert sustain so 1.0 means full volume
Ignore unknown event types

Always iterate through pending events, even if the type is unknown. Otherwise,
TripleOscillator falls into an endless loop where it keeps reading the same
event and has no idea what to do with it.

This started happening in newer versions of JALV, we get an event of type "1".
Map LFO parameters to seconds
Obsolete the LFO x100 parameter

Fold the calculation into import
Update presets. Done changing parameters for now
Add fix for events of unknown type to LB303