Added MPL license headers
SectorRenderer renders entities in sector, manages particle systems for ship thrusters
Thrusters apply torque based on orientation and position relative to ship center of mass
GameManager controls the player ship's thrusters
Player can dock with station if they are near
Refactored game loop to allow full local testing
Added AI controller abstractions
Added ability to save database to local copy for offline testing
Tech Tab is now interactive, has properties panel
