TauLabs/TauLabs — pull request #1065 by solidgoldbomb (2013-12-31 22:54:54+00:00)
Title: system-health: add AltitudeHold to system health svg file

This fixes the console warnings:
````
[SystemHealth] Warning: The SystemHealth SVG does not contain a graphical element for the "AltitudeHold" alarm.
````