Fix block flow button in host flows page

scripts/lua/modules/flow_utils.lua

@@ -1887,3 +1887,39 @@ function printFlowSNMPInfo(snmpdevice, input_idx, output_idx)
 end
 
 -- #######################
+
+function printBlockFlowJs()
+  print[[
+  var block_flow_csrf = "]] print(ntop.getRandomCSRFValue()) print[[";
+
+  function block_flow(flow_key) {
+    var url = "]] print(ntop.getHttpPrefix()) print[[/lua/pro/nedge/block_flow.lua";
+    $.ajax({
+      type: 'GET',
+      url: url,
+      cache: false,
+      data: {
+        csrf: block_flow_csrf,
+        flow_key: flow_key
+      },
+      success: function(content) {
+        var data = jQuery.parseJSON(content);
+        block_flow_csrf = data.csrf;
+        if (data.status == "BLOCKED") {
+          $('#'+flow_key+'_info').find('.block-badge')
+            .removeClass('label-default')
+            .addClass('label-danger')
+            .attr('title', ']] print(i18n("flow_details.flow_traffic_is_dropped")) print[[');
+          $('#'+flow_key+'_application, #'+flow_key+'_l4, #'+flow_key+'_client, #'+flow_key+'_server')
+            .css("text-decoration", "line-through");
+        }
+      },
+      error: function(content) {
+        console.log("error");
+      }
+    });
+  }
+  ]]
+end
+
+-- #######################