Redundancy list - add columns & mass delete

[SimplyCorbett]

Describe the problem to be solved

video-redundancies-list lacks sorting options and a mass delete button.

Describe the solution you would like

Add sortable columns for created on & expires on date. Allow "total size" to be sortable, currently it can't be sorted.

I'd also like to see an option to sort by views if possible.

A mass delete option would be nice.