Improve communication and integration with new core
This follows after #7771 (closed).
Code repos are currently ok: Core: https://github.com/kalikaneko/bitmask_core Communication layer: https://github.com/ivanalejandro0/bitmask_gui2/tree/master/pyqt5
We need to integrate the communication layer (now called @CommandDispatcher@)) with the new Qt5 ui and the existing core commands.
(from redmine: created on 2016-01-30, relates #7771 (closed))