added dialogue to the horse when Linda is in the party
fixed a bug in the relationship window: now you can exit it by pressing the right click of the mouse.
added bgm to the chris & erick beach event
added bgm to the kate & linda childhood event
added bgm to map: mansion
added bgs to the map: outside of manor
added bgs to map: farm
added se to the horse
changed select, cancel, save/load and enter sound effects to custom ones