Some minor changes

Sorry, I couldn't come up with a better name. These are some changes that did not fit into any open MR.

Changes:

• VelocityControllerHelper: changing VectorXf to Vector6f (VectorXf is not guaranted to have 6 elements.)
• typos
• viz::Box: initializing pose if not set explicitly

source/RobotAPI/libraries/RobotStatechartHelpers/VelocityControllerHelper.cpp

@@ -57,7 +57,7 @@ namespace armarx
         controller->activateController();
     }
 
-    void VelocityControllerHelper::setTargetVelocity(const Eigen::VectorXf& cv)
+    void VelocityControllerHelper::setTargetVelocity(const Eigen::Vector6f& cv)
     {
         controller->setTargetVelocity(cv(0), cv(1), cv(2), cv(3), cv(4), cv(5));
     }