Added support for import of OCIL checks. Previously, all checks were assumed to be OVAL. If the check is neither OVAL or OCIL, its check-laguage is set to UNKNOWN. All imported applications will have UNKNOWN check-language.
On export, set check-fact-ref/@href to be the original file name. The RT uses that field as file id reference.
In export dialog, set the output directory to last used directory.
