Updated to 4.1

- Updated and upscaled the city sets and custom planet backgrounds.

- Fixed an issue that caused the spartan leader trait to not show up on Spartan portraits in the UNSC portrait set properly.

- Updated deposits and static modifiers that add districts to the renamed <district_type>_max_add.
- Fixed an issue where the UNSC Vehicle Depot building was missing after researching the technology to unlock it.


Known Issues:
- Civilian ships will not automatically equip UNSC/Ancestor ftl drives.

- Updated the mod to 4.0.22.
- Added shield regen to the post-war UNSC Shield-reinforced Titanium A3 armor.
- Fixed the ONI Alpha Site deposit and swapped out the old researcher jobs for the physicist, engineer, and biologist jobs.