rewrote main parts in internal reference handling.
*** empty log message ***
upgrade Crossfire to Deliantra
handling undefined archetypes now more gracefully by defaulting it's type to 'empty_archetype' and opening a error dialog to inform the user about the inconsistent map.
Changed updating of attribute editor and inventory editor in a major manner. We have now an abstraction layer between attribute editor and arch/object that handles updating of the map and calling change_begin/set/end. Works fine after testing, please watchout for bugs in attribute editor, inventory editor and updating of these.
Implemented a different inventory editor, added context menu to picker to add stuff to the inventory (drag&drop doesn't work yet, will be done later).
implemented better drag&drop. moved inventory editor out of the attribute editor.
bugfixes all around
fixed a bug in the inventory editor
removed face checking and implemented pick editing
added perl eval tool and removed debugging output
fixed cursors
added inventory editor and fixed some bugs in the attr editor
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