Decouple the module ConfigParser from several classes

[GuillemCastro]

There are several classes unnecessarily coupled with the module ConfigParser. We should decouple it by creating a class that will use it (an adapter) that should be instantiated only once (in app.py), though multiple instances should be permitted through the app, and then pass it to the rest of the classes (to reduce further more the coupling, we should only pass the parameters the classes need).

[kafkasl]

I would like to help with this issue, however I do not know how you test the code nor which kind of adaptor you have in mind.

[GuillemCastro]

We won't be using this software anymore, and we don't plan on supporting it. Raspberry Pi is not suitable for real-time operations (this software was design to run in a Raspberry Pi Zero). The software for the new on-board computer is being developped at Intruder Cotrol.