repair for wrong body on bots < 20
Merge pull request #2124 from birarda/master

bot.js repair for wrong body when bot # < 20
increase size of audio output buffer to match size of ring buffer
Merge pull request #2125 from birarda/simple-audio

increase size of audio output buffer to match ring buffer
Delay loading models until we know that we need them (i.e., that we're not
beyond billboard distance).  Closes #2121.