FIX Don't require jquery on the frontend

[GuySartorelli]

None of this javascript is actually used in the built-in silverstripe navigator functionality anymore - but someone might be relying on this javascript being there, so just removing the file would be a breaking change. Instead, I've rewritten the jquery functionality using pure javascript.

You can test it using this in a template. The new js should behave the same way the old js did in 4.11. Note that the popup css puts the popup above the visible area of the window by default, so I've added an !important style to the element below to counteract this for testing purposes.

$SilverStripeNavigator

<div id="SilverStripeNavigatorLink">
    <a>This is a link thing apparently?</a>
</div>
<div id="SilverStripeNavigatorLinkPopup" style="top:0!important;">
    This is the popup! It'll pop up.
    <a class="close">close</a>
    <br>
    <input value="this test will be selected when you click the input">
</div>

Issue

• admin jQuery is gone, $SilverStripeNavigator breaks site for authors, devs, etc. #2853

[emteknetnz]

Tested locally, seems fine

[emteknetnz]

Released as 4.12.2 and 4.13.1