Update Sell page to use User Guide links from configuration

[fatihorhan]

What? Why?

We (OFN Turkey) translated the user guide to Turkish and changed the configuration to link to that page but Sell page still links to global user guide because it doesn't use the configuration.

https://github.com/openfoodfoundation/openfoodnetwork/blob/master/app/views/home/sell.html.haml has hard links for user guides but it should use the configuration like in https://github.com/openfoodfoundation/openfoodnetwork/blob/master/app/views/admin/shared/_user_guide_link.html.haml.

This PR fixes that.

What should we test?

Sell page link to the URL set in configuration.

Release notes

Sell page now uses configuration for user guide links.

Changelog Category: Fixed

Discourse thread

https://openfoodnetwork.slack.com/archives/C2GQ45KNU/p1592157142302400

[fatihorhan]

Hello,
Build fails but I think it's unrelated to my changes. Should I rebase?

[sigmundpetersen]

Hey @fatihorhan, yes this is a known "flaky" spec and unrelated to your PR.
I'm rebuilding to get it green, but nothing else you need to worry about.
We will fix the flaky spec in another issue/PR.

[fatihorhan]

Thank you @sigmundpetersen .

[luisramos0]

awesome, thanks for your PR!!!

[sauloperez]

Welcome and thanks for this meaningful contribution @fatihorhan 😍 !

[fatihorhan]

Thanks for review and speedy approval.
Could this be merged? Is there something I need to do?

[sigmundpetersen]

Hey @fatihorhan this will now be tested according to your testing notes in the PR description. Someone from our testing team will do this and if it passes it will then be merged and added to the next weekly release.

If you install the Zenhub browser extension you can follow the issues/PRs along our pipeline from Dev Ready through In Dev, Code Review and Test 👍

You can read more about the process here https://github.com/openfoodfoundation/openfoodnetwork/wiki/Pipeline-development-process

[filipefurtad0]

Hi @fatihorhan ,

I checked that changes set in the Configurations (/admin/contents/edit, as superadmin) take effect here on the /sell page, so the correct hyperlink on "Find out more in our user guide." can now be set.

Moving to ready to go,
Thank you for this PR!