Remove governor XP bar, as it was disabled by Paradox in 2.3

Changed most windows to use the same background (a bit brighter)

Modified governor picture in planet viewer

Added new GFX overlay for population cake diagram

Fixed 2 meaningless errors in the planet viewer that didn't affect anything

Fix missing sound when building a district
Decreased the button to remove blocker, so that planetary feature lore is readable before and whilst blocker is removed. (Button is now the blocker image, not the whole feature entry)

Update for 2.3.0

Fix planet modifiers overlapping devestation indicator

Increase district size to 9

Remove info box