bigtorrent: fix TEST mode for #1219

and also return a login error message

src/Jackett.Common/Definitions/bigtorrent.yml

@@ -49,7 +49,7 @@
       sent: "yes"
       returnto: "/"
     error:
-      - selector: table:contains("Login failed!")
+      - selector: div.error
     test:
       path: index.php
 
@@ -61,7 +61,7 @@
       - path: browse.php
     inputs:
       $raw: "{{range .Categories}}filter_cat[{{.}}]=1&{{end}}"
-      search: "{{ .Query.Keywords }}"
+      search: "{{if .Keywords}}{{ .Keywords }}{{else}}  {{end}}"
     rows:
       selector: table#torrent_table > tbody > tr:has(a[href^="browse.php?cat="])
     fields: