Removing soundman for now
Adding plugins to settings
Adding showcase
WavPlayer initialization fix
Will need further work.. if even needed
Fixing advance in wavplayer.js
ReportSoundError fix
Finishing testing, fixing VAS plugin

Removed the old vas.js plugin, now always use the vas-slider.js (even for
future VAS implementations). Otherwise:
 - fixing selection problems
 - finishing showcase
Merge branch 'master' into soundman_testing

Merge updates to plugin system
Changing settings
Adding soundman.js again.

Still buggy though, soon to be solved.
Soundman fix hopefully finished