Refined ArnoldPatch. Dynamic device control panel for GUI. Fixed several bugs.

ArnoldPatch now uses parameters field for "float" and "color" values.
ArnoldInterface is able to set "string" and "matrix" values. Juce App
generates a control component for each device dynamically.
Fixed bugs:
- Arnold plugins were loaded after loading ass file. Cannot find plugins.
- Rig read json without '\0' at the end. "Not JSON" error.
- Device added invalid parameters. Bad memory access when deleting device.