Toggle button for A/B testing

[oraNod]

Fixes #20

[oraNod]

@samccann It's still a bit rough but what do you think about this approach? We can add all the html from the current docsite to an olddocsite subdirectory and add a toggle button with a bit of js.

[samccann]

I'd change 'toggle to old site' to 'return to old site'. And I clarified in the issue but I'll repeat here - toggle goes to/from the actual live docs.ansible.com. That way we get live people (when the time comes) seeing a much larger call to action button on the top of that page. Something like "Try our new docsite redesign!" so it's big and obvious. That brings hopefully hundreds of visitors to the new docsite, where we will need a feedback button or something so they can tell us what they thing and wht needs fixing so to speak.

[oraNod]

@samccann Could you please take another look? Not sure how great this is tbh.

[oraNod]

@felixfontein Great suggestion with the data field to set a redirect page name. That works like a charm and is certainly better than copying pages during the build.

[samccann]

This is looking pretty good! Can we make the 'try out the new site' text either bigger or in bold? We want anyone on the 'old site' pages to really know there's something better out there lol.

As a side question - we publish all these pages to docs.ansible.com and the new pages are the default with this, and the old pages accessible by that toggle?

[oraNod]

@felixfontein Thanks for the great suggestions and the help simplifying the page toggle. I can honestly say I've learned from that and it's been fun.

[oraNod]

@samccann I've updated the wording and style for the toggle. Let me know if you think it needs anything else. Thanks for the great reviews as always.

[samccann]

output lgtm thanks