Add 'Back-to-top' button for partners list page

[lalit97]

The partners page is quite long now. A 'back to top' button was needed.

Bug: T170113

[Samwalton9]

Could you add a screenshot of what this button looks like, please? :)

[lalit97]

@Samwalton9 Sure adding a gif file showing the working of the button :)

[lalit97]

Hello @Samwalton9 I thought you just missed this one, please have a look whenever you are free :)

[Samwalton9]

Hey lalit - thanks for the reminder. I'm actually going to wait on reviewing this. We've got a lot of moving pieces being merged in to the tool this month and it might just reduce complications to hold off on merging this PR until then. Sorry about that - we'll get to it in a few weeks :)

[lalit97]

Okay, no problem :)

[jsnshrmn]

I rebased this so I can check it against our current code base and review.

[jsnshrmn]

This occludes the footer navigation in mobile views. That needs to be resolved

When I load the page without JavaScript, this feature disappears. Please use JavaScript for progressive enhancement where possible. Since this is just navigation between page anchors, it should work without JavaScript.

[jsnshrmn]

Also, we've moved to an anonymizing reverse proxy for external assets, so it would be great if you updated the URLs to match what is in #447. Since you had no way of knowing that this change was about to happen, I'd be happy to make that update on your behalf if you don't want to.

[lalit97]

This occludes the footer navigation in mobile views. That needs to be resolved

Fixed it, now working well in mobile view.

When I load the page without JavaScript, this feature disappears. Please use JavaScript for progressive enhancement where possible. Since this is just navigation between page anchors, it should work without JavaScript.

removed the javascript part.

[lalit97]

Also, we've moved to an anonymizing reverse proxy for external assets, so it would be great if you updated the URLs to match what is in #447. Since you had no way of knowing that this change was about to happen, I'd be happy to make that update on your behalf if you don't want to.

I have removed the urls, since they were already present in base.html. Thank you for such a detailed review. I have fixed all the points you have mentioned :)

[suecarmol]

This looks great and will be very useful once it's merged! I just want to request a small change before merging this.