Added highlighting of current waypoint leg.
Merge commit '54d9d3d803746d79ca7a55994a7c2ce6afe0cd31' into slugs_revamp
Changed ISR to loiter at current position.
Added Messages widget to tool widgets list.
Prevented param and waypoint request on startup.
Moved leg changes signal to UAS for robustness.
Merge commit '65949880da7dc1f25b2f467f1736c813e2c6730e' into slugs_revamp
Removed messages widget from slugs view.