Update of all HTML Matomo loader from Core

[tzi]

Description:

The new Matomo loader has a lot of greatness:

• No HTTP request
• transparent background
• Cleaner in screen with high pixel density

In this PR I migrated all easy ones in the same time. The easy ones are:

• loaded in HTML, not in CSS
• in the core repository, not in the plugins

I already migrated 3 of them without any complications, so… Why not all of them 😄

User visitor map

before	after

Marketplace example

before	after

Review

• Functional review done
• Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• Security review done
• Wording review done
• Code review done
• Tests were added if useful/possible
• Reviewed for breaking changes
• Developer changelog updated if needed
• Documentation added if needed
• Existing documentation updated if needed

[michalkleiner]

Nice one @tzi, thanks!

In a follow up, if there's time and energy, we can also update the twig include to have the <span class="loadingPiwik"> wrapper in it, making it a single line where it's used with the default loading text. The include can also take extra params such as whether the style should be display:none, display:visible or missing (probably not relevant as when it's missing, it should be visible). We can also override the loading message or hide it if needed. We can do that in a follow up PR.