Console: Mark LS1 encrypted leasesets as deprecated

also add notes to javadocs for the KeyRing class used to store the keys

router/java/src/net/i2p/router/PersistentKeyRing.java

@@ -13,6 +13,10 @@ import net.i2p.util.KeyRing;
  *  ConcurrentHashMap with backing in the router.config file.
  *  router.keyring.key.{base64 hash, with = replaced with $}={base64 session key}
  *  Caution - not all HashMap methods are overridden.
+ *
+ *  Deprecated -
+ *  This is for the deprecated LS1 AES encrypted leasesets only.
+ *  LS2 encrypted leaseset data are stored in netdb BlindCache and router.blindcache.dat.
  */
 public class PersistentKeyRing extends KeyRing {
 

router/java/src/net/i2p/router/RouterContext.java

@@ -560,7 +560,15 @@ public class RouterContext extends I2PAppContext {
         }
     }
 
-    /** override to support storage in router.config */
+    /**
+     *  Basic hash map for LS1
+     *
+     *  overriden to support storage in router.config
+     *
+     *  Deprecated -
+     *  This is for the deprecated LS1 AES encrypted leasesets only.
+     *  LS2 encrypted leaseset data are stored in netdb BlindCache and router.blindcache.dat.
+     */
     @Override
     public KeyRing keyRing() {
         if (!_keyRingInitialized)