Shows the edit comment button on mobile
## What does this MR do?
Shows the edit comment button on mobile.
## What are the relevant issue numbers?
Closes#17214
## Screenshots (if relevant)
![Screen_Shot_2016-06-01_at_12.33.13](/uploads/d46b800c175a53821ea8e8af49c07641/Screen_Shot_2016-06-01_at_12.33.13.png)
See merge request !4402