[WIP][JRP] Update for vision based observer

[arntanguy]

@Dwaaap @mmurooka

On the robot I found that you were using this version of the Object/SLAM observers, namely Object2 and SLAM2.
From the naming I'm guessing that this is some sort of (unfinished?) rewrite of the original observers.

So could you let me know:

• what's the status on that?
• what does this change w.r.t the original observers?
• do we need to use these observers for the JRP demo?

[mmurooka]

I didn't know about this local changes in the robot's PC. I think @Dwaaap can explain it.