I asked the developer, she said that they no plans in opening the source code of the skin :( .
I would need the possibility of exporting the filtered entries to an csv file!
> Who is interested in adding the following features of filtered in a
> Roadmap ?
> 1) support more than 'list' value in 'list view type'. For example
> what about make filters on a maps, wouldn't that be useful in any
> with maps? Or timelines? Or the most powerful 'template' output?
This is very application specific feature, or so it seems to me.