Add Matomo tracking

[cburgdorf]

What was wrong?

Currently we do not have a good insight into our target group. In order to improve both Trinity itself and the documentation, it makes sense to aggregate some data.

How was it fixed?

Add Matomo Tracking to Docs site.

Matomo is an Open Source web analytics platform that allows us to get better insights and optimize for our audience without the negative consequences of other compareable platforms.

Read more: https://matomo.org/why-matomo/

To-Do

• [x] Clean up commit history

• [x] Add entry to the release notes

Cute Animal Picture

[pipermerriam]

rage merge so I can see if this is working

[pipermerriam]

huzzah, it works