Pwa audit/add meta description to routes

[mellisdesigns]

Summary
Add meta descriptions to all routes in the generated sample template based off Lighthouse Audit recommendations.

Audit Trail
After

Before

[mellisdesigns]

Excuse the name of the branch, this is not a pws specific change. As part of this PR I can also change a few other items that the audit picked up. Thoughts?

[evdama]

that's the issue that goes along with this sveltejs/svelte#1607

[evdama]

something odd is going on, based of the template, when I apply this patch, then npm install and npm run build and npm run dev it renders fine but just for the initial load.

After that, clicking between the items inside Nav doesn't show the route contents anymore e.g. try clicking 'about' or 'blog' and back to 'home'. Nothing is rendered.

I tested on current Chrome within incognito window just to make sure no extension etc. is going to trick something but didn't change the result. Same in normal window of course.

[matyunya]

Adding meta to <svelte:head> breaks page transitions for me.

[evdama]

yup, it does, so it's verified

here's the console error log

chunk.70861921.js:52 Uncaught (in promise) TypeError: Cannot read property 'removeChild' of null
    at detach (chunk.70861921.js:52)
    at Object.destroy [as d] (index.7c71542e.js:123)
    at destroy_component (chunk.70861921.js:272)
    at client.78f318a7.js:623
    at chunk.70861921.js:209
    at run (chunk.70861921.js:14)
    at Array.forEach (<anonymous>)
    at run_all (chunk.70861921.js:20)
    at check_outros (chunk.70861921.js:191)
    at Object.update [as p] (client.78f318a7.js:625)

going down the rabbit hole it seems it doesn't have a parent node because it explodes at

function detach(node) {
    node.parentNode.removeChild(node);
}

[Conduitry]

See sveltejs/svelte#3187 (comment) - I believe this is a bug that needs to be fixed in Svelte, not worked around in Sapper.

[benmccann]

It looks like it was fixed in Svelte 3.6.7

[benmccann]

I'm going to close this since we're now on a newer version of Svelte