Popup dialog were broken by double loading of jQuery by gadjo/root.html
template. We override the gadjo-js block to empty it and we add the
javascript file expected by gadjo in the views default medias.
New entries can be added by applications using the
a2_hook_manager_homepage_entries(view) hook.
Each entry is a dict containing at least a string label and a string
href. A CSS "class", a numeric "order" and a string "permission" can
also be provisionning but are not mandatory.