add hint to "default max results per page" limit on ConfigPortal

(limit is applied in yacysearch & max. total results by sum result-stack size)
- remove obsolete search.navigation prop (has moved to ConfigSearchPage_p)

htroot/ConfigPortal.html

@@ -78,7 +78,7 @@
           </dd>
           
           <dt>Default maximum number of results per page</dt>
-          <dd><input type="text" name="maximumRecords" value="#[maximumRecords]#" size="3" /></dd>
+          <dd><input type="text" name="maximumRecords" value="#[maximumRecords]#" size="3" /> <small>max = 100 (with CACHEONLY=5000)</small></dd>
 
           <dt>Default index.html Page (by forwarder)</dt>
           <dd><input type="text" name="indexForward" value="#[indexForward]#" size="60" /></dd>

htroot/ConfigPortal.java

@@ -171,12 +171,6 @@ public class ConfigPortal {
         
         prop.put(SwitchboardConstants.REMOTESEARCH_RESULT_STORE, sb.getConfigBool(SwitchboardConstants.REMOTESEARCH_RESULT_STORE, true) ? 1 : 0);
 
-        prop.put("search.navigation.hosts", sb.getConfig("search.navigation", "").indexOf("hosts",0) >= 0 ? 1 : 0);
-        prop.put("search.navigation.authors", sb.getConfig("search.navigation", "").indexOf("authors",0) >= 0 ? 1 : 0);
-        prop.put("search.navigation.collections", sb.getConfig("search.navigation", "").indexOf("collections",0) >= 0 ? 1 : 0);
-        prop.put("search.navigation.namespace", sb.getConfig("search.navigation", "").indexOf("namespace",0) >= 0 ? 1 : 0);
-        prop.put("search.navigation.topics", sb.getConfig("search.navigation", "").indexOf("topics",0) >= 0 ? 1 : 0);
-
         prop.put("search.verify.nocache", sb.getConfig("search.verify", "").equals("nocache") ? 1 : 0);
         prop.put("search.verify.iffresh", sb.getConfig("search.verify", "").equals("iffresh") ? 1 : 0);
         prop.put("search.verify.ifexist", sb.getConfig("search.verify", "").equals("ifexist") ? 1 : 0);