Changed the link identifier from link_name to link_id. link_name was a string while link_id is an integer. This change was made since the identifier needed to be included in the DOWNLINK_STATUS message which as part of the telemetry class doesn't allow fields to be of strings. Also, the error message that occurs when a telemetry class message does have a string was changed to list this as a possible cause of the error.
Added GUI in GCS for multiple links. link_combiner.py now sends LINK_STATUS messages with the time since the last message as a field. The GCS now has a page in the notebook named Link. This page lists the links and has an idicator for whether the link is good or not.