fix: ComBaseTemplateHelperDate::format() aka @date() view helper; fix: some OS dependent bugs

fix applies to the cases when 1st parameter is not a KDate instance,
see http://www.anahitapolis.com/topics/107659-bug-combasetemplatehelperdate-calls-kdate-constructor-with-array-instead-of-kconfig

fix: style <link /> tags on Windows http://www.anahitapolis.com/topics/103266-bug-path-to-main-template-css-on-windows-server

fix: .less compilation builds wrong relative paths to base template on WIndows