Improve front matter "added" params

Add missing ones and add the ability to show or hide the badge

Fixes a few more 404 errors in the version picker

site/content/docs/5.3/helpers/color-background.md

@@ -4,7 +4,8 @@ title: Color and background
 description: Set a background color with contrasting foreground color.
 group: helpers
 toc: true
-added: "5.2"
+added:
+  version: "5.2"
 ---
 
 ## Overview

site/content/docs/5.3/helpers/focus-ring.md

@@ -4,7 +4,8 @@ title: Focus ring
 description: Utility classes that allows you to add and modify custom focus ring styles to elements and components.
 group: helpers
 toc: true
-added: "5.3"
+added:
+  version: "5.3"
 ---
 
 The `.focus-ring` helper removes the default `outline` on `:focus`, replacing it with a `box-shadow` that can be more broadly customized. The new shadow is made up of a series of CSS variables, inherited from the `:root` level, that can be modified for any element or component.

site/content/docs/5.3/helpers/icon-link.md

@@ -4,7 +4,8 @@ title: Icon link
 description: Quickly create stylized hyperlinks with Bootstrap Icons or other icons.
 group: helpers
 toc: true
-added: 5.3
+added:
+  version: "5.3"
 ---
 
 The icon link helper component modifies our default link styles to enhance their appearance and quickly align any pairing of icon and text. Alignment is set via inline flexbox styling and a default `gap` value. We stylize the underline with a custom offset and color. Icons are automatically sized to `1em` to best match their associated text's `font-size`.

site/content/docs/5.3/helpers/stacks.md

@@ -4,7 +4,8 @@ title: Stacks
 description: Shorthand helpers that build on top of our flexbox utilities to make component layout faster and easier than ever.
 group: helpers
 toc: true
-added: "5.1"
+added:
+  version: "5.1"
 ---
 
 Stacks offer a shortcut for applying a number of flexbox properties to quickly and easily create layouts in Bootstrap. All credit for the concept and implementation goes to the open source [Pylon project](https://almonk.github.io/pylon/).

site/content/docs/5.3/helpers/vertical-rule.md

@@ -4,7 +4,8 @@ title: Vertical rule
 description: Use the custom vertical rule helper to create vertical dividers like the `<hr>` element.
 group: helpers
 toc: true
-added: "5.1"
+added:
+  version: "5.1"
 ---
 
 ## How it works