* switch dashlet_badge widget init from js_template to js_on_ready_template
* add phpdoc on UIBlock::DEFAULT_JS_FILES_REL_PATH
* remove old code in \AjaxPage::output (after the return statement) that is already handled with the new Twig rendering
Would be better to have only one handler on the dashboard side but we want to respect code responsibility !
So until we have a system for components to print "static" code (that will be printed only once whatever number of component instances we have in the page), we are doing it the "old" way : calling a JQuery widget in the component JS Twig.
