feat: APP-347 get rid of buy buttons and sell orders page in main nav

[r41ph]

Description

https://regennetwork.atlassian.net/browse/APP-347

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How to test

https://deploy-preview-2488--regen-marketplace.netlify.app/storefront

1. Verify that the Trade item in the main navigation is not present.
2. When logged in go to /storefront and check that the Buy button is no present in the Actions column but the Cancel option is still available.
3. When not logged in go to /storefront and check that the Actions column is not visible.

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[r41ph]

@Erika see testing instructions

[blushi]

pre-approving, pending some remaining clean up

[blushi]

we can also get rid of BuyCreditsModal and related code: isBuyModalOpen, etc.

[r41ph]

Thanks for pointing that out

[blushi]

@Erika see testing instructions

@r41ph looks like you didn't tag the right @erikalogie
@erikalogie could you have a look?

[erikalogie]

This looks good, I would just get rid of this shadow when there are no actions in the logged out version

[r41ph]

This looks good, I would just get rid of this shadow when there are no actions in the logged out version

Ah ok I'll remove it. I thought that was part of the design, like a 'hint' for letting users know there's more table to scroll horizontally.

[r41ph]

@erikalogie I have removed the shadow, please have a look

[erikalogie]

LGTM!