List should include some details about each archive

[da2x]

dat store list should include some management details about each Dat archive such as size of the archive, sparesmode/lates true or false, and when (date and time) the archive was last updated.

[RangerMauve]

So, most of that stuff isn't in the DEP, so I'm a little hesitant to add it. Ideally we should have the same stats show up in dat-store as in hashbase.