Merge pull request #702 from a01200356/digbt

[fix] results with digbit don't truncate anymore

searx/engines/digbt.py

     results = list()
     for result in search_res:
         url = urljoin(URL, result.xpath('.//a[@title]/@href')[0])
-        title = result.xpath('.//a[@title]/text()')[0]
+        title = extract_text(result.xpath('.//a[@title]'))
         content = extract_text(result.xpath('.//div[@class="files"]'))
         files_data = extract_text(result.xpath('.//div[@class="tail"]')).split()
         filesize = get_torrent_size(files_data[FILESIZE], files_data[FILESIZE_MULTIPLIER])

tests/unit/engines/test_digbt.py

         <table class="table">
             <tr><td class="x-item">
             <div>
-                <a title="The Big Bang Theory" class="title" href="/The-Big-Bang-Theory-d2.html">The Big Bang Theory</a>
+                <a title="The Big Bang Theory" class="title" href="/The-Big-Bang-Theory-d2.html">
+                    The Big <span class="highlight">Bang</span> Theory
+                </a>
                 <span class="ctime"><span style="color:red;">4 hours ago</span></span>
             </div>
             <div class="files">