lint unchecked

...le/java/src/net/i2p/router/web/ConfigAdvancedHandler.java

...ole/java/src/net/i2p/router/web/ConfigClientsHandler.java

...sole/java/src/net/i2p/router/web/ConfigClientsHelper.java

...sole/java/src/net/i2p/router/web/ConfigLoggingHelper.java

...sole/java/src/net/i2p/router/web/ConfigTunnelsHelper.java