MDL-21695 Replaced rss_client/feedautodiscovery.html

AMOS BEGIN
 HLP rss_client/feedautodiscovery.html,[enableautodiscovery_help,block_rss_client]
AMOS END

blocks/rss_client/editfeed.php

@@ -53,7 +53,7 @@ class feed_edit_form extends moodleform {
         $mform->addElement('checkbox', 'autodiscovery', get_string('enableautodiscovery', 'block_rss_client'));
         $mform->setDefault('autodiscovery', 1);
         $mform->setAdvanced('autodiscovery');
-        $mform->setHelpButton('autodiscovery', array('feedautodiscovery',  get_string('validatefeed', 'block_rss_client'), 'rss_client'), true);
+        $mform->addHelpButton('autodiscovery', 'enableautodiscovery', 'block_rss_client');
 
         $mform->addElement('text', 'preferredtitle', get_string('customtitlelabel', 'block_rss_client'), array('size' => 60));
         $mform->setType('preferredtitle', PARAM_NOTAGS);

blocks/rss_client/lang/en/block_rss_client.php

@@ -76,5 +76,4 @@ $string['timeout'] = 'Time in minutes before an RSS feed expires in cache. Note
 $string['timeoutdesc'] = 'Time in minutes for an RSS feed to live in cache.';
 $string['timeout2'] = 'Timeout';
 $string['updatefeed'] = 'Update a news feed URL:';
-$string['validatefeed'] = 'Validate feed';
 $string['viewfeed'] = 'View feed';

lang/en/help/rss_client/feedautodiscovery.html

@@ -1,10 +0,0 @@
-<h1>Feed Auto-discovery</h1>
-
-<p>
-With this option enabled Moodle will try to automatically discover a feed
-on a web page if is not given a direct link to a feed.
-</p>
-<p>For example, when entering the Moodle Docs URL: <pre>http://docs.moodle.org</pre>
-Moodle would automatically discover the recent changes feed to subscribe to:
-<pre>http://docs.moodle.org/en/index.php?title=Special:RecentChanges&amp;feed=rss</pre>
-</p>