Add Terms of Use notice to welcome banner

[Arpan200502]

Closes #6791

Adds a Terms of Use notice to the welcome banner displayed to unauthenticated users on the map page.

Implementation details:

• Added a new translation string layouts.welcome_tou_notice_html in config/locales/en.yml.
• Appended the notice to the existing welcome banner in app/views/layouts/map.html.erb.
• Kept layouts.hosting_partners_2024_html unchanged since it is reused on other pages.

The notice includes a link to the Terms of Use.

Pointing towards https://osmfoundation.org/wiki/Terms_of_Use

[pablobm]

Pinging @1ec5 for an opinion.

[pablobm]

Any opinions on the terms paragraph using a slightly smaller font (fs-7) than the other paragraphs (fs-6)? In the original issue, @1ec5 commented:

To avoid making the banner too large, especially on mobile devices, we could make the second paragraph smaller (like it used to be, I think) and append the new text to that paragraph.

Which I initially understood as shortening the copy, but perhaps this is what was meant?

[1ec5]

Yes, I was referring to using a smaller font for the partners paragraph, not shortening the text in it. The addition of this paragraph didn’t add as much vertical space as I feared, at least in English, but setting the partners paragraph in the same smaller font would help highlight the site description, which is more interesting to visitors anyways.

[Arpan200502]

Yes, I was referring to using a smaller font for the partners paragraph, not shortening the text in it. The addition of this paragraph didn’t add as much vertical space as I feared, at least in English, but setting the partners paragraph in the same smaller font would help highlight the site description, which is more interesting to visitors anyways.

@pablobm @1ec5
Yes, that was my intention as well. I kept the Terms of Use paragraph in fs-7 so it matches the existing partners paragraph and keeps the main site description visually emphasized.

If you'd prefer merging the text into the same paragraph instead, I can adjust that.

[1ec5]

No need to combine the paragraphs, but let’s switch this paragraph to fs-7 fw-light also, since they’re both less critical to the banner’s message.