HTML validation fixes

...2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java

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

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

...rconsole/java/src/net/i2p/router/web/ConfigNetHelper.java

...nsole/java/src/net/i2p/router/web/ConfigReseedHelper.java

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

...erconsole/java/src/net/i2p/router/web/ConfigUIHelper.java

...nsole/java/src/net/i2p/router/web/ConfigUpdateHelper.java

apps/routerconsole/jsp/configreseed.jsp

apps/routerconsole/jsp/configupdate.jsp

apps/susidns/src/jsp/addressbook.jsp

apps/susidns/src/jsp/details.jsp

router/java/src/net/i2p/router/Blocklist.java