Sidebar refinements (#2306)

* Begin sidebar refinement, change back to left as default

* New filters proof of concept

* Hide if only one option

* Version filters

* Update changelog page

* Use new cosmetic variable for sidebar position

* Fix safari issue and change defaults to left filters, right sidebars

* Fix download modal on safari and firefox

* Add date published tooltip to versions page

* Improve selection consistency

* Fix lint and extract i18n

* Remove unnecessary observer options

apps/frontend/tailwind.config.js

@@ -24,6 +24,8 @@ module.exports = {
         heading: "var(--color-heading)",
         red: "var(--color-red)",
         orange: "var(--color-orange)",
+        green: "var(--color-green)",
+        blue: "var(--color-blue)",
         purple: "var(--color-purple)",
         bg: {
           DEFAULT: "var(--color-bg)",