Clearpath fixes and modifications.
Fixed build bugs in TF updater node.
Removed generated files.
Created stack infrastructure.

Packages are now part of "jaco" stack. Added stack.xml and
CMakeLists.txt files. Updated author/maintainer/description
tags elsewhere.
Added gitignore for generated files.
Changed several status messages from ROS_INFO to ROS_DEBUG to avoid flooding the console with unnecessary data.
Added Estop, Estart and HomeArm services

Changed the cartesian and angular control loops to check if the arm has stopped moving,
rather than check to see if the destination has been reached.
Removed workspace files and extra set of Kinova libs.
Removed generated SRV files.