Update 1.1.0 - Red-light district, parking lots, new buildings, bug fixes

[h3]NEW[/h3]
- Red-light district: once unlocked is free to research and build, can be built multiple times, generates 600 'retail' jobs.
- Parking lots: Instead of getting abandoned, high stage office, retail and residential buildings are replaced with parking lots. New buildings can then replace parking lots without having to restart from stage 1. Riots, crime and fire still cause abandonment.
- 5 new residential buildings: 2 new upper class stage 7, new lower class stage 2,3 and 4.

[h3]BUG FIXES[/h3]
- Schools stage 4 were not showing on the education overlay (your old schools could be invisible after loading, still functional but rebuild them if necessary)
- Intersections between gravel roads and streets with trees were creating invisible road tiles
- Starting a city with state owned buildings would cause the city's economy to stop working
- State-owned factories and retail were not generating any tax income.
- Immigration effect on political affiliations was not computed correctly and had instant repercussions. Now more progressive.
- Futurologist achievement could not be unlocked
- Added a second reference check to make sure 3x3 parks are saved
- Riot alert message title was not localized
- Riot alert message: "Move to riot" button was not visible enough
- The number of rioters in the streets was always higher than indicated in the alert message
- Fixed a bug affecting the duration of riots, possibly responsible for the riot sound never stopping
- Riots were spawning on walkways and rails
- Alert messages were not showing if the tutorial was stopped halfway through and alerts were still displayed even if turned off.
- Music were stopped in large cities with too many audio sources. New audio optimizations.

[h3]CHANGES[/h3]
- Added warnings in budget and policy when stability is too low to enact a policy, change taxes or print money
- Increased average approval of tax rates
- Increased base religiousness level and decreased effect of religion on political affiliations (large left leaning cities were having troubles expanding, more feedback still needed)
- In a new city, if residential lots were built on high value land, houses were not getting built. Removed maximum land value requirement in small cities.
- Approval rate from policy can no longer go above 100% or below -50%
- Decreased by 50% the effect of high demand on the inflation rate
- Minor visual changes to shadows and window textures