rutracker search provider

Added rutracker as a torrent search provider.
BeautifulSoup 4 needs to be installed to parse the results.

data/interfaces/default/history.html

@@ -45,6 +45,8 @@
 					fileid = 'nzb'
 				if item['URL'].find('torrent') != -1:
 					fileid = 'torrent'
+				if item['URL'].find('rutracker') != -1:
+					fileid = 'torrent'
 			%>
 			<tr class="grade${grade}">
 				<td id="dateadded">${item['DateAdded']}</td>