Get "Our Story" page across the finish line

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Description

The current live version of this page can be viewed here: https://distributeaid.org/our-story/

#771 outlined the initial vision for this page.

File path: Path: content/pages/our-story.md

Already done:

• Title on the page
• Text on the page

Must-haves to go public:

• Add this page to the navigation menu under "About Us"

Would-be-nices to go public:

• Get the banner image in Forestry CMS to show up on the top of the page so it's not so text heavy.
• Get the "image with caption" block that is supposed to go below the text (picture of the two founders) to show up. Alternatively this could be done by
• Move the timeline from the current "about us" page to the bottom of this page.

Not needed at this stage:

• Getting a Youtube embed to work here (see Implement generic YouTube block #889)

Front end feature screenshots

From #771:

Code of Conduct

• I agree to follow this project's Code of Conduct