psionic leeches now also display the current effect values

New social feature: Friends! Simply right click on somebody's name to friend/unfriend her/him. You will then be notified of their coming & going and have them listed in the talk to list even if they are not in the same channels(or even game) as you. This is a very simple feature for now and will probably be enhanced later.

If the rod of recall somehow drops in an unreachable spot it gets added to the player's inventory directly

(not complete yet)

added soem code to handle friends, not complete

Added a Tiles.sharp_scaling parameter; if set to true the entities textures will not be interpoled by OpenGL

Added a free rank of armor training and iron mail to Cursed start