since the object is not immediately removed, any other code may still
think an object is there, therefore leading to item duplication. This code
therefore sets the itemstring to '' after the object is picked up to avoid
such issues

Parallax mapping with slope information.
Overriding normal maps.

As suggested by qwrwed.

Fixed lua error when none of the worlds or servers selected are and connect,
delete or configure buttons used.

This reverts commit 4e5760a5.

Similar to assuming a selection box for the nodebox drawtype, minetest.register_item() now assumes a selection box for the fencelike drawtype.

Most modders would otherwise forget to explicitly define this, and generated nodes aliased from mods would wall-off caves