Add user manual to footer

Walkthrough

The changes involve modifications to the footer section of the HTML template located in app/views/layouts/_footer.html.erb. The social media links for Twitter and Facebook have been reorganized into a new <div> element for better content structure. Additionally, a new link has been added to direct users to the documentation for Dodona, with a URL that dynamically reflects the current locale. All existing links related to support, contact, status, privacy statement, data, publications, and version information remain unchanged.

Changes

File Path	Change Summary
app/views/layouts/_footer.html.erb	Restructured social media links into a new `<div>` element; added a new link for Dodona documentation with dynamic locale URL. Existing links retained.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Footer
    participant Documentation

    User->>Footer: Access footer links
    Footer->>User: Display social media links
    Footer->>User: Display documentation link
    User->>Documentation: Click on documentation link
    Documentation-->>User: Redirect to documentation page

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dodona-edu / dodona