Remove Dancer2 injected engine config variables

Dancer2 inject this vars, Text::Xslate complains about it - remove it...
Fix template abs paths

Text::Xslate (or more specific File::Spec) are confused about mixed DOS/Unix path delemitters. Hooked Dancer2::Template::Xslate for now.
Revert version change
Revert version change
Revert POD
Merge pull request #3 from burnersk/master

Fix Windows related issues