Finally I was able to install it on Liferay 6.2 CE GA2 official release (with official resource-importer portlet)
I noticed that resource-importer portlet in the marketplace is of elder / incompatible version; that's why I had problems with custom built Liferay 6.2
Going deeper now... thanks for sharing; a lot of rich functionality (I see from code), but I think proper "review" should be done after few days of hard work
Very good job of design and features.
I'm a fan of the design - great job.