Bridges and transportation

• It should now be possible to lead creatures and drive/ride from bridges high up into houses.
• Fix for teleporting when moving out from floors onto steep tiles.
• Added in ability to see who planted an item (using examine).
• Fix so items and creatures that were on bridge when it was destroyed, loose their link to the bridge.
• Made wall collisions wider, to remove the see through feature.
• If there is only one possible item to craft, it is auto-selected in crafting window by default (like sand+clay).
• Non-premiums gives less to no skill in pvp due to some exploitability.
• Chaos server: In order to deal with alt problems, non-premiums can only respawn in permanent cities and pmk capitals until a better solution can be coded.