Added package to combine emergency_switch and battery diagnostics signals to be able to disable the hardware amplifiers when the battery voltage is too low

git-svn-id: https://roboticssrv.wtb.tue.nl/svn/ros/code/tue-ros-pkg/trunk/tue_actuation/amigo_amplifier_enabler@7830 3a3c2cfb-d3b9-409e-9e75-db8fcdbcaac6
Modifications to amplifier_enabler

git-svn-id: https://roboticssrv.wtb.tue.nl/svn/ros/code/tue-ros-pkg/trunk/tue_actuation/amigo_amplifier_enabler@7836 3a3c2cfb-d3b9-409e-9e75-db8fcdbcaac6
Removed dependecy

git-svn-id: https://roboticssrv.wtb.tue.nl/svn/ros/code/tue-ros-pkg/trunk/tue_actuation/amigo_amplifier_enabler@7841 3a3c2cfb-d3b9-409e-9e75-db8fcdbcaac6
Added delay in amplifier enabler to prevent the base from going into safety when pushing. Since this basically a hack, this should be reverted as soon as it is fixed electrically

git-svn-id: https://roboticssrv.wtb.tue.nl/svn/ros/code/tue-ros-pkg/trunk/tue_actuation/amigo_amplifier_enabler@8242 3a3c2cfb-d3b9-409e-9e75-db8fcdbcaac6
Battery only give warnings

git-svn-id: https://roboticssrv.wtb.tue.nl/svn/ros/code/tue-ros-pkg/trunk/tue_actuation/amigo_amplifier_enabler@9512 3a3c2cfb-d3b9-409e-9e75-db8fcdbcaac6
Merge branch 'master' of https://github.com/tue-robotics-lab/amigo_amplifier_enabler