Show standings when the stage is completed

[Drarig29]

Example from jQuery Bracket

[Drarig29]

Currently, the very last match that is played in a stage won't have the status "Archived" because no match comes after. Therefore, it will never be automatically archived.

We could maybe add something to archive the whole stage at the end in the manager, which will ensure all matches are archived and maybe add a property to stage which says it's archived too.

When the stage is archived, the viewer would show the first places.

[Drarig29]

Related: Drarig29/brackets-manager.js#69