Embedded external jars within libs folder. Re-wrote all code.

After running into issues with external jars being missing, I was
forced to re-arrange. 'libs' now encompasses all required jars.

Additionally, I've replaced singletons with classes with only static
members. 'ProcessingUI' remains as a singleton (in order to instantiate
PApplet) whereas 'Recorder', 'Constants', & 'Scripter' now do not
require instantiation.