Make Matomo more compatible with jQuery 3 #16187

refs https://github.com/matomo-org/wp-matomo/issues/314

Tested Matomo for WordPress with jQuery 3 but nothing was shown until I made these two changes. I added jQuery migrate to find this problem. JQuery migrate complained about this:

"HTML tags must be properly nested and closed: <div class="reporting-page">

    <div piwik-activity-indicator loading="loading"/>

    <div ng-show="hasNoPage">{{ 'CoreHome_NoSuchPage'|translate }}</div>

Once I made these two changes, Matomo seems to work nicely with jQuery 1, jQuery 2 and jQuery 3.

Whether we upgrade to jQuery 3, while still using jQuery 1 in Matomo for WordPress is still to be seen. I didn't do a full test so can't guarantee that everything works with jQuery 1 and 3 but it's a step in the right direction.