Fix name and protocol changes within simonaAPI

[danielfeismann]

resolves #384

Mainly based on previous work of @sebastian-peter

[t-ober]

Looks very nice ! Just a few minor things 🙂

[t-ober]

Does last evs refer to the evs currently at the evcs upon request ? I think currentEvs would be clearer. If you agree we should als adapt the method signature of getTickIntervalAndLastEvs

[sebastian-peter]

I wouldn't agree to that since the EVs retrieved here stem from a tick in the past, thus lastEvs. This is in contrast to the EVs that are determined for the current tick, namely the ones staying plus arrivals, thus currentEvs.

[sebastian-peter]

This also makes sense if you look at the naming of currentTick, which is the tick currently activated. A tick at which the agent was active before the current tick I would name lastTick :)

[t-ober]

I see the point (and was expecting that you will make it 😄 ) but I would understand it a bit differently.
Since we haven't dealt with arrivals and departures yet, the current evs are still the evs from last tick. Nevertheless I don't think we have to drag that on here.