Display LTS and Stable on the download page

[phillipj]

A pragmatic approach to toggling between LTS and Stable downloads. Duplicated the download page to have two separate pages: /download for LTS and /download/stable for Stable.

Two links in the upper right corner will appear as soon as the https://nodejs.org/dist/index.json contains both an LTS and a Stable v5.x release. Until then, no extra links will be visible.

Default is LTS

When toggled to Stable

Any thoughts? Are we okey with two different pages/URLs or would doing some JS trickery by changing the link URLs on the page be preferred?

Refs #200.

[bnb]

+1, LGTM.

[phillipj]

@fhemberger @mikeal in regards to translation efforts, are you okay with having duplicate translation (and layout) files for the LTS and Stable download pages? The biggest advantages of doing this is possibly having different content on the these two pages and less JS trickeries.

[fhemberger]

@phillipj I would prefer having a partial where you inject either project.currentVersion.stable or project.currentVersion.lts, e.g:

{{> download-matrix version=project.currentVersion.stable}}

This would be much easier to keep in sync.

[mikeal]

@phillipj also, you can already add localization specific styles if what you nee to accomplish is doable with just CSS.

[phillipj]

@fhemberger good idea about using a partial 👍 Just pushed an update adding download-matrix

[phillipj]

@fhemberger I just fixed the merge conflict after you merged #260

[fhemberger]

@phillipj Dang, just merged it (fixing the conflict). Can you please have a look if I merged the correct solution in 6007cb7?

[phillipj]

@fhemberger no worries, both versions of the conflict worked :)