Atmocity Windows, Mac, Linux game

0.9085 -> 0.909
- Added additional rock props.
- Added paint mode cursor and paint cursor to show if area can't be painted due to low credits.
- Added thousand-separators in messages from conglomerates to improve readibility.
- Added thousand-separators to values in local economy view.
- Added more distinct "border" to flat world atmosphere.

- Edited preschool footprint so make it fit nicer with streets.
- Cleaned up local economy panel, including fixing text overflow.

- Lowered amount of medicine required in hospitals.
- Increased (slightly) health output of hospitals.
- Increased (slightly) health output of clinics.
- Increased performance of setting shader property blocks.
- Increased conglomerate value calculation, their property should be worth roughly 2-3 times more, but land value now factors in more than before.
- Increased tax income from property tax (20% of property value is taxable now, so income is value * taxrate * 0.2). Property tax should now be a worthwhile revenue source.
- Increased conglomerate unhappiness from different types of tax.
- Increased property sales tax revenue as a result of overall higher property values.

- Changed flat world atmosphere into half sphere, so that the shader works properly.
- Changed atmosphere shader to better display the border of the world (primarily if world is flat).
- Changed happiness to take a greater hit at extreme tax rates.

- Fixed discrete policies still being active if city hall is demolished.
- Fixed discrete policy window being open and interactible if open before demolishing city hall.
- Fixed painted tile "sticking" when switching.
- Fixed "unplaced" paint not disappearing when mouse pointer is outside of targetable area.
- Fixed "deny"-sound being played when placing grass or asphalt with no money.
- Fixed being able to paint without having money.
- Fixed incorrect color mapping on building status view.
- Fixed some effect display types missing (public transport, pollution and wealth).
- Fixed some building types not given the correct color in building type display.
- Fixed wind power plant missing from building menu.
- Fixed incorrect tool tip for culture display mode.
- Fixed terrain disappearing in different view modes (when playing flat worlds).
- Fixed being able to place water blocks in starting water if playing a city with water.
- Fixed some z-fighting of objects in the building type base view.
- Fixed incorrect normalization of graphs (for example in the local economy view).
- Fixed conglomerate value not following currency re-evaluation properly, which would lead to propery tax gradually diminishing.
- Fixed incorrect display of property tax revenue per conglomerate.
- Fixed rare occurance of null reference error due to running sliders for objectives, even when there are no objectives.