Support multiple instances

[zalmoxisus]

We need to identify the app instance, so not to mix up the actions in case the monitor receives them from multiple instances.

There should be 2 options of dealing with different instances (or apps) simultaneously:

1. As independent instances (need a way to select instances in the monitor).
2. Synchronize them as follows:
   

[zalmoxisus]

From v0.0.8 is possible to run multiple instances. The monitor will switch to the history for the instance which dispatched the action.

We still need the ability to list the instances, to stick to a specific one and to synchronize all the instances, which should be done on the remotedev-app part.

[zalmoxisus]

Implemented in v0.2.0 of remotedev-app.