Integrate page indicators into page actions
In https://code.librehq.com/ots/mediawiki/TorqueLFCTheme/-/merge_requests/2, @frankduncan noted that indicators are something we can probably remove altogether, but may want to keep around in case some extension makes good use of them.
Currently, we render indicators into the content body, below the site message but above the page heading.
Instead, as these are roughly equivalent to page actions, we should find a way to integrate them into the page actions that we already have, either as individual buttons outside the ellipsis menu, or inside the menu.