minor fixes

[dstroud]

• moved creation of note_players and aliasing of nb.players to nb:init() to resolve error launching nb.lua demo script multiple times.
• fixed issue with description>>name field not being populated with MIDI v port name
• fixed typo in voice_mod_targets
• modified sorting of players to handle uppercase names
• added nb:stop_all() to cleanup() fn in nb.lua
• fix for system issue with pset loading breaking text param