First integrated prototype of the dockerized execution of the VisualCircuit application from the browser

[jmplaza]

Currently VisualCircuit include two basic functionalities:

(a) VISUAL EDITOR for designing a robotics application as a set of blocks that are connected through wires (similar to digital electronics, digital circuits). Each block typically has inputs and outputs. Its functionality is defined in Python, and periodically update its outputs.
(b) TRANSLATOR which translates the graphical description of a circuit into a set of Python files. It runs in the backend. Each block is implemented as a Python subprocess. Each wire is implemented as a shared memory area.

Now a major improvement is to add in the VisualCircuit frontend (c) the capability of RUNNING the edited robotics application. The application will run inside a docker container and will be monitorized from the websever. It will be built upon the dockerized execution infrastructure used at JdeRobot's RoboticsAcademy project.