- Hide I2CP settings when in router context

- Better BEValue.toString()

(most of the following got missed in the last checkin)
- Fix about 9 NPEs
- Fix numwant in magnet mode
- Send metadata size in extension handshake
- Open trackers are primary if we don't have primary trackers
- Add missing break in port message handling
- Increase max msg size to account for metadata msg
- Remember magnets across restarts
- Drop peers w/o extensions if we need metainfo
- Fix DATA messages
- Fix tracker transition to non-magnet
- Fix infohash for non-magnet
- Fix up peer transition to non-magnet
- More logging

apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java

@@ -1314,15 +1314,17 @@ public class I2PSnarkServlet extends Default {
         out.write("     ");
         out.write(renderOptions(0, 4, options.remove("outbound.length"), "outbound.length", HOP));
 
-        out.write("<tr><td>");
-        out.write(_("I2CP host"));
-        out.write(": <td><input type=\"text\" name=\"i2cpHost\" value=\"" 
-                  + _manager.util().getI2CPHost() + "\" size=\"15\" > ");
+        if (!_context.isRouterContext()) {
+            out.write("<tr><td>");
+            out.write(_("I2CP host"));
+            out.write(": <td><input type=\"text\" name=\"i2cpHost\" value=\"" 
+                      + _manager.util().getI2CPHost() + "\" size=\"15\" > ");
 
-        out.write("<tr><td>");
-        out.write(_("I2CP port"));
-        out.write(": <td><input type=\"text\" name=\"i2cpPort\" class=\"r\" value=\"" +
-                  + _manager.util().getI2CPPort() + "\" size=\"5\" maxlength=\"5\" > <br>\n");
+            out.write("<tr><td>");
+            out.write(_("I2CP port"));
+            out.write(": <td><input type=\"text\" name=\"i2cpPort\" class=\"r\" value=\"" +
+                      + _manager.util().getI2CPPort() + "\" size=\"5\" maxlength=\"5\" > <br>\n");
+        }
 
         StringBuilder opts = new StringBuilder(64);
         for (Iterator iter = options.entrySet().iterator(); iter.hasNext(); ) {