Render maps octrees as cubes

[mauricefallon]

the octree code I integrated creates a separate folder ('Octomap) in the model browser:

While the Maps Server folder converts incoming octrees to a point clouds and draws them:

@patmarion How would you suggest having the Map Server octree data drawn as cubes?

We could either:

• have the Octomap folder subscribe to MAP_OCTREE and render as both points (Maps Server folder) and octree (Octomap folder). This is easy.
• call octovis from the maps server c++ code and render it there

Also need to add a method to convert from an octree to a point cloud.

[patmarion]

Maybe we can schedule a phone call to discuss in person?