[Web] minor fixes

data/web/lang/lang.en-gb.json

@@ -1086,7 +1086,7 @@
         "forwarding_host_removed": "Forwarding host %s has been removed",
         "global_filter_written": "Filter was successfully written to file",
         "hash_deleted": "Hash deleted",
-        "iam_test_connection": "Connection successfull",
+        "iam_test_connection": "Connection successful",
         "ip_check_opt_in_modified": "IP check was saved successfully",
         "item_deleted": "Item %s successfully deleted",
         "item_released": "Item %s released",

data/web/templates/admin/tab-config-identity-provider.twig

@@ -157,7 +157,7 @@
           <div class="row mb-2">
             <label class="control-label col-md-3 text-sm-end">{{ lang.admin.iam_sync_interval }}</label>
             <div class="col-12 col-md-9 col-lg-4">
-              <input class="form-control" type="number" name="sync_interval" style="width: 80px;"  {% if iam_settings.sync_interval %}value="{{ iam_settings.sync_interval }}"{% else %}value="15"{% endif %}>
+              <input class="form-control" type="number" min="1" name="sync_interval" style="width: 80px;"  {% if iam_settings.sync_interval %}value="{{ iam_settings.sync_interval }}"{% else %}value="15"{% endif %}>
             </div>
           </div>
           <div class="row mt-4 mb-2">