Create separate show and edit page for saved-annotations

[jorg-vr]

This pull request adds a separate show and edit page for saved annotations.
This page is now linked from an annotation and from the list page.

Show:

This page also shows a list of usages. This a generic submission listing.
I will replace this by a more dedicated annotation listing in the future.

Edit:

Updated list view: (Title is now a link and edit button is removed)

Updated annotation view: (Link icon is replaced by comment bookmark icon and is now an actionable link color and directs to show page)

Part of #4564

[bmesuere]

• On the show page, the annotation data is listed as key value pairs which is a bit plain. Can't we make it a sentence? This annotation was use x times in the Visualisation Test course for the Curling exercise. The annotation itself could be formatted as a quote or callout or something like that.
• The table title is "linked annotations", shouldn't that be linked submissions?
• Maybe open the linked submissions in a new tab?
• On the save annotation index (not edited here) in the first column, the "1 keer gebruikt" text is wrapped in p tags which adds unnecessary bottom margin. This can probably be a div. (resolved in Make saved annotations filterable and sortable #4887)

[jorg-vr]

Maybe open the linked submissions in a new tab?

I am not a fan of this. It is not good practice to auto open different tabs for links that stay within your website. I often end up with multiple unused Dodona tabs because the course list also opens courses in a new tab. I do not like that behavior.

If a user wants the link to open in a new tab, most browsers support this with a right click option or a keyboard shortcut