[Feature request] Enable deactivation of external link opening by configuration
In some deployments, the metaview Portlet is available for users that do not have access to the Internet. Currently, the source and mainSource links (for document gathered on the Internet) are clickable (using the anchor style of the taglib). However, it is asked to prevent user to click on links that will end up into an error (due to the absence of Internet access).
The idea is to have in configuration of the controller a Boolean, as we do for sources eventing.