Navigation Overhaul + Homepage

[Keeeeeeeen]

General (o7) Navigational overhaul to allow for more pages at root, as well as some styling and formatting changes for consistency

Homepage/New Navigation Bar:

Nav Page Highlighting + Permission based Nav buttons with correct colour ordering:

Mobile Nav View + Unnested Admin Pages:

User Page with Dark/Light Mode folded into it plus UserMenu moved to Nav bar:

Not ready for merge yet as there a couple of bugs to iron,as well as adding News functionality etc. (Admin pages are also reliant on #137 ), but would appreciate some opinions on what I have so far

[jenkins-ystv]

Deployed a preview of this PR to https://pr-144-internal.dev.ystv.co.uk

[markspolakovs]

I think the contrast on the navbar between the text and the background needs another look, it seems a bit low to me. This is a bit more nitpicky, but I do wonder if there's too much colour there and it distracts from the main content - perhaps only set the background on the active page?

Also, does the nav bar expand/contract or is it permanently open on desktop? In the latter case I think having both a left nav and (what looks in your screenshots to be) a top nav is slightly wasteful of space.

[Keeeeeeeen]

Left Nav can be collapsed on desktop, Top Nav can't, and in terms of wasting space, all the space the Nav takes up now was previously whitespace from how the page was centered (so if anything I'd argue it's less wasteful of space as that space is actually being used now.

Though thinking on it, I am slightly tempted to test out a fully left-aligned Nav and do away with the top bar, though I worry that'd be too jarring of a transition (also top nav would have to stay on mobile to house the burger for collapsing the nav)