Update KAT definition for real login test, error handling and indexer testing logic (#1569)

* Update KAT definition for real login test

* Add error handling to KAT definition's login

* Even better error handling...

Sorry for the inelegant successive commits

* Add better test behaviour for KAT

Added some logic so tests return results. Previously did a search with an empty string which would return no results. NB : it does test with "torrents.php?search=%22%22" but that's not an issue, the parameter is ignored on that page.

src/Jackett/Definitions/kickasstorrent.yml

@@ -95,15 +95,18 @@
 
   login:
     method: post
-    path: "new/account-login.php"
+    path: "/new/account-login.php"
     inputs:
       username: "{{ .Config.username }}"
       passkey: "{{ .Config.passkey }}"
+    error:
+      - selector: font.error:contains("Access Denied")
     test:
-      path: index.php
+      path: "/new/index.php"
+      selector: a[href="account-logout.php"]
 
   search:
-    path: "/new/torrents-search.php"
+    path: "/new/{{if .Query.Keywords}}torrents-search.php{{else}}torrents.php{{end}}"
     inputs:
       $raw: "{{range .Categories}}c{{.}}=1&{{end}}"
       search: "\"{{ .Query.Keywords }}\""