/list_action
action for listing public sites

Sourcecode in Root/actions.js:
1:   function list_action() {
2:      // preparing res.data.sitelist and prev/next links
3:      // ("all" shows all sites, "yes" is for scrolling)
4:      this.renderSitelist(25, "all", "yes");
5:      res.data.title = getMessage("SysMgr.listTitle ", {serverTitle: root.getTitle()});
6:      res.data.body = this.renderSkinAsString("list");
7:      root.renderSkin("page");
8:      return;
9:   }