many improvements to map 2:

-added lots of new clip brushes to prevent survivors from getting out of bounds
-made the first aid cabinet spawn with 4 kits instead of 2 in the last saferoom
-fixed bot survivors not picking up first aid kits in the starting saferoom
-fixed many navigation mesh areas

also fixed the same first aid cabinet in the beginning of map 3

many improvements to map 1:

-fixed the incorrect detailsprites on some grass textures
-made the way forward a bit more clear in the box store
-many improvements to the navigation mesh
-added many new infected ladders

-added the new re-designed campaign poster, background and outro credit image for the campaign, courtesy of SirWololo!

-fixed a navigation issue where the level would fail to end properly in map 4
-removed some duplicate fence brushes

TEST UPDATE

- made bile jars and other items spawn less frequently in map 3

- removed an extra road brush that was added accidentally during a previous update in map 2

-fixed an issue with a clip brush causing survivors to get stuck when jumping out a window in map 1

-removed some brushes that were added accidentally to map 3 in the previous update
-shortened the length of the decontamination chamber's mist sprayer sound a bit

-added placeholder hint entities to all events
-various fixes and improvements to all maps
-navmesh updates across all maps