UI shows already-downloaded files as 'completed' instead of 'errored'.
No more "Retrieving" lines in UI log window.
WARN log levels all around.
Mostly for #147
Table-based view.
Tracks # of images in a rip, and dates.
Sortable.
Double-clicking URL allows copying the URL to clipboard.
Can selectively re-rip only albums that are 'checked'
'Checked' albums are persisted when RipMe is closed & reopened.
For #147 (selective re-ripping)