Reflect status (unresolved; to-do; no status flag) in back end post list

[tobifjellner]

We use the To-do flags a log in make.wordpress.org/polyglots/.
It would be wonderful if the "to-do" status was also directly visible in the backend post list. Perhaps as an optional column, or as a CSS class that could be used to change the color of a border, etc.

[tobifjellner]

Even better would be to also have a possibility to filter the back-end post list for a particular resolved/unresolved status.