Layer5: GSoD : Revive the content navigator for GSoD-2020

[kushthedude]

Description

We are in GSoD with the umbrella organisation as CNCF, it would be great to revive the GSoD content.

Expected Behavior

In #441, we removed the GSoD links from homepage & footer. We need to revert them back.

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[Optional] Additional Context

See https://github.com/layer5io/layer5/pull/441, also we don't need to add back the MLH Program we just need GSoD back.

[kushthedude]

Hey @chandrashritii, would you like to have this fixed?

[Tanuj22]

@kushthedude Can I work on this?

[kushthedude]

Please go ahead @Tanuj22

[Tanuj22]

@kushthedude I think I need a white logo for the button. Where can I get that?

[leecalcote]

@Tanuj22 will you give this SVG a try?

https://github.com/layer5io/layer5/blob/master/assets/images/buttons/gsod.svg

[Tanuj22]

Yes I am on it