* Plugins: New plugin downloader/installer

* configclients.jsp: Use new WebAppStarter so webapps that are
      started later also get the temp dir, password, and classpath
      configuration just like if they were started at the beginning
    * configupdate.jsp: Delay after checking for update so the
      summary bar will have buttons.

apps/routerconsole/java/src/net/i2p/router/web/ConfigUpdateHandler.java

@@ -65,6 +65,10 @@ public class ConfigUpdateHandler extends FormHandler {
                     addFormNotice(_("Update available, attempting to download now"));
                 else
                     addFormNotice(_("Update available, click button on left to download"));
+                // So that update() will post a status to the summary bar before we reload
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException ie) {}
             } else
                 addFormNotice(_("No update available"));
             return;