generate all words of 3 to strain length instead of limiting to word of 25 char max

src/couchapp/secreton/views/strain/map.js

 function(doc) {
 	var strain =  doc.replicon.strain.toLowerCase();
-	for( var wl=3 ; wl<25 ; wl++){ 
-		for( var i=0; i< strain.length-wl ; i++ ){
+	for( var wl=3 ; wl<=strain.length ; wl++){ 
+		for( var i=0; i<= strain.length-wl ; i++ ){
 			emit( strain.substring(i, i+wl), doc.replicon.strain);
 		}
 	}