Impact iCM4j 13

Improvements to the styling of related panel headings.

Removing an unused script tag to resolve a console error.

Use the subsite locale for the html lang property.

Update Impact JS to use new resizeBlock JS method.

A single fix for share this page via email.

Fixes for internationalisation tokens, empty divs, articles using the Contact template, and removing resize.js from the theme.

A new type of article panel that will show an article's body content.