Art Assets #21, #24, #25, #40, #42, #43, #45, #46, #74, #75, #76, #81, #86, some updated models

#21 - Sailboat
#24 - Beach Shower
#25 - Bench
#40 - Generic Tree
#42 - Palm Tree
#43 - Bird Poop
#45 - Pizza and Slice
#46 - Generic Building Medium
#74 - Beach Grass
#75 - Stand
#76 - Paper Cup
#81 - Lifeguard Tower
#86 - Cage
Version 3 models of Grill and People
Imported art assets
Merge branch 'master' into DesignTeam