- Plugin Monitor moved to different class
- Methods that operate on plugin.xml files moved to utilility class
  (and made to work even when plugin is not yet loaded)
- Plugin monitoring now loads plugins more efficiently by:
-- Observing parent/child hierarchy (allowing for one-shot load)
-- allowing for concurrent plugin loading
- Dev plugins are now processed as if they were ordinary plugins
- Plugin canoncical naming is now used throughout the code (fixes
  case sensitivity bug)