Added upper stereo camera nodelets to launch files
commented out battery monitor
Added fixed rate and syncin to camera configurations
added camera sync nodelet
Added sync node to diagnostics
Added battery back to diagnostics launch
Added libviso2 slam and stereo_image_proc to camera bringup
Merge branch 'master' into camera-nodelets

Conflicts:
	aero_bringup/config/diagnostics.yaml
	aero_description/launch/aero_base.launch
Merge branch 'master' into camera-nodelets

Conflicts:
	aero_bringup/launch/robot_aero.launch
Merge branch 'master' into camera-nodelets
now launch lower cameras too
Added outside exposure and gain
Added udev rule for network interfaces
Fixed tf prefixes on cameras
Set some reasnable exposures for dark outside
Added joystick launch file
Added joystick teleop bringup