Socketio signal refactoring

Created by: meguiraun

Some changes to make easier working with socketio signals, basically, now the event name will be: 'motors', 'task', etc... and the hwobj signal will be within the data sent to the client. A more structured way of sending/listening. It is working as before, if new signals need to be sent, add to signals.py, and link to the appropiate method (or create one)