progress: move the "idle" cell to the next cycle ETA column

progress: move the "idle" cell to the next cycle ETA column

When all extents within a size tier have been queued, and all the
extents belong to the same file, the queue might take a long time to
fully process.  Also, any progress that is made will be obscured by
the "idle" tag in the "point" column.

Move "idle" to the next cycle ETA column, since the ETA duration will
be zero, and no useful information is lost since we would have "-"
there anyway.

Since the "point" column can now display the maximum value, lower
that maximum to 999999 so that we don't use an extra column.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>