Added access check to the print_insert_link function

Proper fix to the book_node_visitor_html_pre which was incorrectly committed with 'print' instead of 'view'

Fix #192855: If relative links start with '/' just append them to the server name (commit to 5.x-3.x-dev)

Added (partial) Italian translation. Thanks ccattaneo74!

Enable choice of method to open the new window via radio boxes (now possible to select a Javascript XHTML Strict compliant method)

Updated Norwegian and Hungarian translation. Thanks stenjo and hinger!

Fixed settings description bug in the URL list still describing the old link deactivation feature.

Update print.pot to current version (and the fr, de, hu and no .po files)