Added hover stack to manage overlapping Area2Ds

Added room selector in demo scenes
Modified dialogues in room 1, fixed bug in room 8 and 9

game/rooms/room8/room8.tscn

@@ -75,7 +75,7 @@ __meta__ = {
 "_edit_vertical_guides_": [  ]
 }
 global_id = "room8"
-esc_script = "res://game/rooms/room1/esc/room1.esc"
+esc_script = "res://game/rooms/room8/esc/room8.esc"
 player_scene = ExtResource( 4 )
 camera_limits = [ Rect2( 0, 0, 1289, 555 ) ]