Fixed issue where Thermal Signature Markers would load in a player's GPS list but not on their HUD

Fixed issue where a client would CTD when grid are landing geared and merging together

- Fixed line of code that can cause client crashes when swapping sectors (Thanks Pas)

- Siskussy made a Fixussy

- Fixed issue where thermal signals did not work outside of sync range
- Fixed issued where ships docked to stations continued to give off a thermal signal
- Existing signals will still need to "cool down" regardless of docking status.
- Halved thermal signal broadcast distance
- Reduced Hydrogen Thruster signal output by 33%
- Unpiloted grids will have no signature (except when cooling down w/ existing sig)
- Grids under 15k PCU will not have a signature

- I literally have no idea what Sisko fixed. Ask him.

- Updated base Hydrogen thruster output from 7x to .75x

- Enabled cross-sector thermal scan syncing
- Only updates every 30 seconds (gps lasts 30 seconds as well)
- Only shows up if you're in a cockpit/remote control
- Added some optimizations so it only sends gps once for a ship a player is in. Wont send gps of npcs. Will hopefully
keep it performance friendly

- Fixed the issue that causes synced GPS markers not to be deleted or be able to be deleted by players