You can download the Reload Button Extension here. Once the Extension is downloaded, find it in your Downloads folder and double-click to open. You will be asked if you are sure you want to install the Extension. Click Install.
When you click Install, it seems like nothing has happened. This is because you have to add the Reload button to your tool bar. Here's how:
- Go to View / Customize Toolbar from the Menu Bar.
- Find the Reload button on the buttons sheet and drag it up to your tool bar. You can place the button anywhere you like - other buttons will move out of the way as needed.