* Add plugin and initial `es` translation
* Add missing features to plugin
* Translate home page and sponsors
* Add language selector and widen nav
* Fix mobile style and language selector
* Add js helper file
* Update header.css
* translate footer
- Make downloads data-driven, create a database of versions;
- Add a custom plugin to generate download URLs;
- Use the new plugin for the regular downloads page as well.
This PR replaces the current CMS website with a static version of it built using Jekyll.
- Everything should be working 1 to 1 with the same permalinks except for the `/news` page (not articles) which was renamed as `/blog` (old links will redirect to new ones).
- The showcase entries on the home page now redirect to their showcase page in our site so that the user can choose which store front or page to visit next.
- I also changed the first link from the nav bar to go to the showcase page since the features one is still pretty outdated.
Co-authored-by: Yuri Sizov <yuris@humnom.net>
