MM-31711 - Implement cursor paging for threads (#16748)

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

i18n/en.json

@@ -1444,6 +1444,10 @@
     "id": "api.file.write_file.app_error",
     "translation": "Unable to write the file."
   },
+  {
+    "id": "api.getThreadsForUser.bad_params",
+    "translation": "Before and After parameters to getThreadsForUser are mutually exclusive"
+  },
   {
     "id": "api.image.get.app_error",
     "translation": "Requested image url cannot be parsed."