This code belongs to callback because both player and AI shouldn't directly access information about teleport channels.
For example pathfinder code need to check teleport channel type only based on information about objects player already seen.
- removed hoverText field
- split getHoverText() method into 3:
- - getObjectName() for generic name
- - getHoverText(Player) for player-specific text
- - getHoverText(Hero) for hero-specific strings
