add new Korean translation and some minor bug fix.
* add new Korean translation
* add me to translators
* fix to not use "lang" directory but "po" directory
* make translation skel generate script works
* replace os.popen2 to subprocess.Popen.
add new Korean translation and some minor bug fix.
* add new Korean translation
* add me to translators
* fix to not use "lang" directory but "po" directory
* make translation skel generate script works
* replace os.popen2 to subprocess.Popen.