Replace dropdown with navigation bar

[jonandernovella]

Related issue(s) and PR(s)

This PR closes #461

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

List of changes made

• The dropdown was replaced by a navigation bar, which makes the website more accessible when using the keyboard.

Screenshot of the fix

Testing

• Try keyboard navigation on the report page

Definition of Done checklist

• I have made an effort making the commit history understandable
• I have performed a self-review of my own code and commented any hard-to-understand areas
• Tests and lint/format validations are passing
• My changes generate no new warnings

[ghost]

At last! Works like a charm...