proper links to the extractor directory. fixes #773

Author: Lennart Koopmann

app/views/system/inputs/extractors/export.scala.html

@@ -11,7 +11,7 @@ <h1>
         </h1>
 
         The extractors of an input can be exported to JSON for importing into other setups
-        or sharing in the extractor directory on <a href="http://www.graylog2.org/" target="_blank">graylog2.org</a>.
+        or sharing in the extractor directory on <a href="http://www.graylog2.org/extractors" target="_blank">graylog2.org</a>.
     </div>
 
     <div class="row-fluid">

app/views/system/inputs/extractors/importPage.scala.html

@@ -11,7 +11,7 @@ <h1>
         </h1>
 
         Exported extractors can be imported to an input. All you need is the JSON export of extractors from any other
-        Graylog2 setup or from the extractor directory on <a href="http://www.graylog2.org/" target="_blank">graylog2.org</a>.
+        Graylog2 setup or from the extractor directory on <a href="http://www.graylog2.org/extractors" target="_blank">graylog2.org</a>.
     </div>
 
     <form action="@routes.ExtractorsController.importExtractors(node.getNodeId, input.getId)" method="POST">

app/views/system/inputs/extractors/manage.scala.html

@@ -27,6 +27,11 @@ <h1>
         any text data into fields that allow you easy filtering and analysis later on.
         Example: Extract the HTTP response code from a log message, transform it to a numeric field and attach it
         as <em>http_response_code</em> to the message.
+
+        <br />
+        Make sure to also take a look at the Graylog2 extractor directory on
+        <a href="http://www.graylog2.org/extractors" target="_blank">graylog2.org</a> for predefined extractor
+        sets of common devices and software.
     </div>
 
     <div class="row-fluid xtrc-select-message">

app/views/system/inputs/index.scala.html

@@ -22,6 +22,9 @@ <h1>
             Inputs in Cluster
         </h1>
         Graylog2 nodes accept data via inputs. Launch or terminate as many inputs as you want here.
+
+        Your log format is not properly parsed? Take a look at the Graylog2 extractor directory on
+        <a href="http://www.graylog2.org/extractors" target="_blank">graylog2.org</a>.
     </div>
     @if(isPermitted(INPUTS_CREATE)) {
     <div class="row-fluid input-new">