Revert "Merge pull request #555 from lilvinz/revert_533"

This reverts commit 49d4961ef622ef6095bac5b8d9635c87b708a5ab, reversing
changes made to a9ee62b4b09ce938c19e78b1508b5871510a14af.
Ground/GCSControl initialize gcsReceiverTimer to null
GcsControlGadget: formatting fix from review
Merge pull request #566 from peabody124/hitl_fix_v2

Hitl fix v2