several balancing and tweaking iterations for the Iceworld levels
Features
players are now forced to start a battle by jumping when they do no have a Support Sphere (i.e. in the first few levels, to make sure they know that you can jump)
Lobby Slots now remember previously selected heroes for each player
Fixes
fixed bug where spawn animation would run when creatures fall down onto the playfield
fixed low-life indicators for heroes
fixed bug where heroes could walk through Oggharr while moving backwards
