Feature/matomo

[lukavdplas]

Adds configuration for analytics using matomo.

• This will import matomo modules if the application environment includes a matomo configuration.
• This includes page tracking, with a custom interceptor to remove query parameters. So we see the visits for a corpus, but not the queries that users enter.

[JeltevanBoheemen]

Suggested change

	tracker.setReferrerUrl('');
	// hide the referral URL and sanitize the event URL because they contain query parameters
	tracker.setReferrerUrl('');