w2v-servert: add cutoff parame (consider only n most frequent forms)

WARNING: this might break mapped multi-lingual vector-spaces
diff --git a/templates/index.html.ep b/templates/index.html.ep
index 7270997..d42a282 100644
--- a/templates/index.html.ep
+++ b/templates/index.html.ep
@@ -310,11 +310,13 @@
 	  <form method="GET">
 		  word(s): 
       <input id="word" type="text" name="word" size="20"  value="<%= $word %>" title="When looking for multiple words use spaces as separators to search around the average vector and | as separator to get the neighbours for each word."> 
+			cut-off:
+      <input id="cutoff" type="text" name="cutoff" size="10"  value="<%= $cutoff %>" title="Only consider the most frequent x word forms.">
 		  % if($mergedEnd > 0) {
         backw. <input type="checkbox" name="sbf" value="1" <%= ($searchBaseVocabFirst ? "checked" : "") %> title="If checkecked base vocabulary will be searched first. Otherwise merged vocabulray will be searched first.">
       % }
-		  max. neighbours: <input type="text" size="8" name="n" value="<%= $no_nbs %>">
-		  max. iterations: <input type="text" name="N" size="8" value="<%= $no_iterations %>">
+		  max. neighbours: <input type="text" size="4" name="n" value="<%= $no_nbs %>">
+		  max. iterations: <input type="text" name="N" size="4" value="<%= $no_iterations %>">
       SOM <input type="checkbox" name="som" value="1" <%= ($show_som ? "checked" : "") %>>
 		  % if($collocators) {
         <span>  </span>sort collocators by