Fixed YTree item selection during items population,
old implementation ignored selected items.
NCInputField did not manage ctrl-h and del to delete input
Merge pull request #20 from anaselli/master

Fixed YTree item selection during items population,
Patch for NCTree.cc works without patch for libyui - merging.
use UTF-8 (most commonly used) instead of utf8
remove obsolete code concerning textdomain
set textdomain (needed for OK button label)