[ajax] refactor/cleanup low-level ajax functions * loadxhtml/replacePageChunck/reload_component/reload_box deprecated in favor of loadXHTML / ajaxFuncArgs * some other cleanups in cubicweb.ajax.js * add js_render which will replace js_component (more generic, nicer argument passing handling)

function set_tab(tabname, cookiename) {
    // set appropriate cookie
    loadRemote('json', ajaxFuncArgs('set_cookie', null, cookiename, tabname));
    // trigger show + tabname event
    trigger_load(tabname);
}