Token support for path alias

Let's move the idea into 3.0.x. Still the maintainers presumably won't implement this, if nobody sponsors the development.

Let's see what we can do in 3.0.x-dev.

Should be possible to implement in 3.0.x quite easily, but is not a feature we plan from our side.
Happy to review MR.

I think due to the new concepts and flexibility for homeboxes, this won't be needed anymore.
There are

• Homebox User Tabs
• Homebox Pages

And feature requests for

• Homebox Blocks
• Homebox Field

To make this possible in a far more stable way!