Add suggest tag option in the website
It would be better if we have tag suggestion option when we browse the icons or open the icon.
Because many time I forgot the tags when I came back GitHub for tag request. And as a user I ignoring to signing every-time just for request the tags. 

![image](https://user-images.githubusercontent.com/49694573/83594494-fbf6ba80-a57c-11ea-8986-b319ac2f9c30.png)
