Name of web monitoring scenario including # character causes error "No items defined." for showing graphs.

If # character is set to the name of web monitoring scenario , the image of graph of the scenario shows error message.

How to reproduce :
1. Open the following location on Zabbix Web interface .

Configuration -> Hosts -> Web -> Scenarios -> Create or Configuration of web monitoring.

2. Set the name including # for the Scenario .

Name: foobar#1

3. Open the following location. And confirm the error message on both Speed and Response time area.
Monitoring -> Web -> Details of the scenario set above.

See also attached image.

We confirmed this problem on version 2.2.16 and 3.0.5 .
If # is set to the name ,it translated wrongly in the URL to show the graph in httpdetails.php.
As a result the error messages are appeared on the these area for graphs.

We fixed this problem using urlencoding().
Please see the attached patch.