V1.2.1907.1

Version 1.2.1907.1:

-AIRAC 1907 update
-Mechanics: ILS No-Transgression Zones (NTZs) have been added for certain airports - Aircrafts on simultaneous approach will not be in conflict as long as they keep out of the NTZ
-Mechanics: Further improved traffic rates and arrival spawning
-Mechanics: More realistic departure acceleration after takeoff
-UI: Step down altitudes on LDAs are now shown as circles on the LDA line
-UI: New background images for the main menu
-Bug fixe