* Router Console translation infrastructure:

- Persistent lang setting with routerconsole.lang=xx
      - Loading any page with ?lang=xx changes the persistent setting
      - Add a custom Jetty handler to load foo_xx.jsp if it
        exists for language xx. This is for jsp files with lots
        of text in them. Otherwise use inline translate methods.
        Not for included jsps.
      - Add a script to create and update messages_xx.po translation
        files, and create ResourceBundles from them
      - Add class to translate strings from cached ResourceBundles
      - Add translate wrappers to HelperBase, FormHandler, and *Renderer,
        so calls can be made from both jsp and java files
      - Add two example translations on configupdate.jsp - one in
        the jsp itself and one in the helper.
      - This is for strings in routerconsole only. Will be expanded
        to other webapps and the router later.

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

@@ -111,6 +111,7 @@ public class RouterConsoleRunner {
             File tmpdir = new File(workDir, ROUTERCONSOLE + "-" + _listenPort);
             tmpdir.mkdir();
             wac.setTempDirectory(tmpdir);
+            wac.addHandler(0, new LocaleWebAppHandler(I2PAppContext.getGlobalContext()));
             initialize(wac);
             File dir = new File(_webAppsDir);
             String fileNames[] = dir.list(WarFilenameFilter.instance());