Mention util.js on all JS plugin pages (#22955)

Fixes #20660

docs/4.0/components/alerts.md

@@ -50,6 +50,7 @@ Alerts can also contain additional HTML elements like headings, paragraphs and d
 Using the alert JavaScript plugin, it's possible to dismiss any alert inline. Here's how:
 
 - Be sure you've loaded the alert plugin, or the compiled Bootstrap JavaScript.
+- If you're building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util). The compiled version includes this.
 - Add a dismiss button and the `.alert-dismissible` class, which adds extra padding to the right of the alert and positions the `.close` button.
 - On the dismiss button, add the `data-dismiss="alert"` attribute, which triggers the JavaScript functionality. Be sure to use the `<button>` element with it for proper behavior across all devices.
 - To animate alerts when dismissing them, be sure to add the `.fade` and `.show` classes.

docs/4.0/components/carousel.md

@@ -14,6 +14,8 @@ In browsers where the [Page Visibility API](https://www.w3.org/TR/page-visibilit
 
 Please be aware that nested carousels are not supported, and carousels are generally not compliant with accessibility standards.
 
+Lastly, if you're building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
+
 ## Example
 
 Carousels don't automatically normalize slide dimensions. As such, you may need to use additional utilities or custom styles to appropriately size content. While carousels support previous/next controls and indicators, they're not explicitly required. Add and customize as you see fit.

docs/4.0/components/dropdowns.md

@@ -12,6 +12,8 @@ Dropdowns are toggleable, contextual overlays for displaying lists of links and
 
 Dropdowns are built on a third party library, [Popper.js](https://popper.js.org), which provides dynamic positioning and viewport detection. Be sure to include [popper.min.js](https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js) before Bootstrap's JavaScript.
 
+If you're building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
+
 ## Accessibility
 
 The [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr>](https://www.w3.org/TR/wai-aria/) standard defines an actual [`role="menu"` widget](https://www.w3.org/TR/wai-aria/roles#menu), but this is specific to application-like menus which trigger actions or functions. <abbr title="Accessible Rich Internet Applications">ARIA</abbr> menus can only contain menu items, checkbox menu items, radio button menu items, radio button groups, and sub-menus.

docs/4.0/components/navs.md

@@ -297,6 +297,8 @@ Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin
 
 Use the tab JavaScript plugin—include it individually or through the compiled `bootstrap.js` file—to extend our navigational tabs and pills to create tabbable panes of local content, even via dropdown menus.
 
+If you're building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
+
 Dynamic tabbed interfaces, as described in the [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices](https://www.w3.org/TR/wai-aria-practices/#tabpanel), require `role="tablist"`, `role="tab"`, `role="tabpanel"`, and additional `aria-` attributes in order to convey their structure, functionality and current state to users of assistive technologies (such as screen readers).
 
 <div class="bd-example bd-example-tabs">

docs/4.0/components/popovers.md

@@ -13,6 +13,7 @@ Things to know when using the popover plugin:
 
 - Popovers rely on the 3rd party library [Popper.js](https://popper.js.org) for positioning. You must include [popper.min.js](https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js) before bootstrap.js in order for popovers to work!
 - Popovers require the [tooltip plugin]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/tooltips/) as a dependency.
+- If building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
 - Popovers are opt-in for performance reasons, so **you must initialize them yourself**.
 - Zero-length `title` and `content` values will never show a popover.
 - Specify `container: 'body'` to avoid rendering problems in more complex components (like our input groups, button groups, etc).

docs/4.0/components/scrollspy.md

@@ -10,6 +10,7 @@ toc: true
 
 Scrollspy has a few requirements to function properly:
 
+- If building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
 - It must to be used on a Bootstrap [nav component]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/navs/) or [list group]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/list-group/).
 - Scrollspy requires `position: relative;` on the element you're spying on, usually the `<body>`.
 - When spying on elements other than the `<body>`, be sure to have a `height` set and `overflow-y: scroll;` applied.

docs/4.0/components/tooltips.md

@@ -10,7 +10,8 @@ toc: true
 
 Things to know when using the tooltip plugin:
 
-- Tooltips rely on the 3rd party library [Popper.js](https://popper.js.org) for positioning. You must include [popper.min.js](https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js) before bootstrap.js in order for tooltips to work!
+- Tooltips rely on the 3rd party library [Popper.js](https://popper.js.org) for positioning. You must include [popper.min.js](https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.10.1/umd/popper.min.js) before bootstrap.js in order for tooltips to work!
+- If building our JS from source, it [requires `util.js`]({{ site.baseurl }}/docs/getting-started/javascript/#util).
 - Tooltips are opt-in for performance reasons, so **you must initialize them yourself**.
 - Tooltips with zero-length titles are never displayed.
 - Specify `container: 'body'` to avoid rendering problems in more complex components (like our input groups, button groups, etc).