Create an extension point for the "Page Footer" and allow it's modification from a wiki page

Currently if you want to modify the footer you need to create a custom skin and override footer.vm.

Changing the content of the footer is one of the most common actions when customising an instance and it should be as easy as possible.

Although we provide an easy way to customise the footer's variables from Administration > Look & Feel > Presentation > Footer > Copyright & Version; the layout options are very limited.

So an idea would be to add an extension point and create a wiki page with the content of the template.