* PersistentDataStore: Write out 300 records every 10 min

rather than 1 every 10 sec;
      Don't store leasesets to disk or read them in
    * Combine rates for pools with the same length setting
      in the new tunnel build algorithm
    * Clarify a log message in the UpdateHandler

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

@@ -162,7 +162,8 @@ public class UpdateHandler {
                 _status = "<b>Update verified</b><br />Restarting<br />";
                 restart();
             } else {
-                _log.log(Log.CRIT, "Update was INVALID - have you changed your keys?");
+                _log.log(Log.CRIT, "Update was INVALID - signing key is not trusted!");
+                _status = "<b>Update signing key invalid</b><br />";
                 System.setProperty("net.i2p.router.web.UpdateHandler.updateInProgress", "false");
             }
         }