add link to wiki on filter pref page

modules/pref-filters.php

@@ -339,6 +339,10 @@
 
 			print "</p>";
 
+			print "<div class=\"insensitive\" style=\"float : right\">See 
+				<a target=\"_new\" href=\"http://tt-rss.spb.ru/trac/wiki/ContentFilters\">this page</a> 
+				for additional	information on filtering</div>";
+
 /*			print "<div class=\"insensitive\" style=\"float : right\">
 				First matching filter is used, filtering is performed
 				when importing articles from the feed.</div>"; */

themes/graycube/theme.css

@@ -463,3 +463,11 @@ ul.headlineDropdownMenu ul li:hover {
 	color : black;
 }
 
+.insensitive a {
+	color : gray;
+	text-decoration : underline;
+}
+
+.insensitive a:hover {
+	color : black;
+}

tt-rss.css

@@ -618,6 +618,14 @@ span.insensitive, div.insensitive {
 	color : gray;
 }
 
+.insensitive a {
+	color : #4684ff;
+}
+
+.insensitive a:hover {
+	color : black;
+}
+
 .prefGenericAddBox {
 	font-size : small;
 }