#3 Tree odd for new tile name

[Adam Miezianko]

When a user clicks on a tile and then changes the name
and clicks apply, the name of the tile in the tree is
sometimes shortened like 'gras...' for 'grassland'.
The name of the tile does seem to be okay in the editor
though, and if you save and load the file then it's
fine as well

It appears to be that the legth of the text is fixed,
and when the name becomes longer, the text field does
not. When you change the name to a shorter one, it
works fine.

A buildTree() would probably fix it, but destroy the
tree state. Perhaps we should add a menu option to
allow the user to rebuild the tree if he so chooses as
a temporary fix?