Also search in HTML formed cells

IP addresses can easily be hidden in HTML formed cells. For example an
IP that links to the IP via an href.

As such, add the naive and basic, but fast html tag stripper from the
core code.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>

sorting/ip-address.js

@@ -26,6 +26,7 @@ jQuery.extend( jQuery.fn.dataTableExt.oSort, {
 			return 0
 		}
 
+		a = a.replace(/<[\s\S]*?>/g, "");
 		m = a.split(".");
 		n = a.split(":");
 		x = "";