Feature: time params, checkboxes instead of dropdown

[tdtm]

If possible, adding a few more params (but all with default values identical to what's there already to keep the awesome speed) like:

• Delete files older than ___ (so sweet cat GIFs in ongoing conversations aren't purged)
• Use checkboxes instead of the dropdown for file types to select multiple

Posting this here if you or anyone else has time to do it, else whenever I have free time, I can probably do it myself.