[webconfig] cleanly handles ``fckeditor_installed`` when no uiprops The previous version of the code relied on a default value with a dummy ``FCKEDITOR_PATH`` entry. The new code check if uiprops is initialized or not.

from os.path import join
assert __file__.endswith(join('scripts', 'script2.py')), __file__
assert '__main__' == __name__, __name__
assert ['-v'] == __args__, __args__