Upgraded support for GPS/WiFi tracker IE10 from ieThings

Added new messages related to magnet tampering/reseating, separate heartbeat message and translation review. Credits to Xperanti, Maylasia for help and valuable inputs. 

Note: some messages in history may not be correctly rendered in case you already have a firmware with separate 4 byte heartbeat message that was not supported before. Please, ignore the issue or delete the message history.