Fixes for Friday's patch

• Fixed an issue with part loading, noticeable in custom battles. This would result in missing parts, broken turrets and default decals.
• Fixed turrets playing traverse sound when they shouldn't.
• Stopped brake force having an effect on acceleration and top speed.
• Fixed blueprint name input fields showing "Cannon" when the field has no value.
• Stopped new transmission and engine designer name input fields causing a potential control lock.
• Engines can now be turned on again when turned off.
• Fixed enemies not disappearing when opening the spawn menu in sandbox.
• Fixed forwards compatibility when loading legacy blueprints for individual modules.
• Fixed engine custom rev limit being overridden on initial load.
• Vehicle movement info graphs now disabled with the GUI.