new table improvements

[nednoodlehead]

1. handle text gracefully, and maybe inside the widget? long lines are placed very ugly-ly.
2. table header? Maybe just insert a header into the 0th slot. It doesn't need to be visible at all times. Would be sorta ugly, and take up important space
3. proper row selection (and subsequent handling of data). this also calls back to the issue with being unable to produce a message (shell.publish) and change the color in one event
   3a. "bulk_edit" ability. so if you have songs with "(Official audio)", you can select them, then select "bulk_edit" it takes to the edit page and you can make a change to the album / author that affects all of the selected
4. proper button to the left support. make it not super ugly, and see if possible to show the playing song as an icon or something. also handle up to 99,999 text-wise.