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

packages/ui/src/components/index.ts

@@ -13,6 +13,7 @@ export { default as DropArea } from './base/DropArea.vue'
 export { default as DropdownSelect } from './base/DropdownSelect.vue'
 export { default as EnvironmentIndicator } from './base/EnvironmentIndicator.vue'
 export { default as FileInput } from './base/FileInput.vue'
+export { default as ManySelect } from './base/ManySelect.vue'
 export { default as MarkdownEditor } from './base/MarkdownEditor.vue'
 export { default as Notifications } from './base/Notifications.vue'
 export { default as OverflowMenu } from './base/OverflowMenu.vue'