To start, this can be a simple text field containing the date. For specifics regarding the UI, see #53.

Care will need to be taken when modifying the date time so that the post will continue to appear in the preview when the date is in the future. Also, it would seem logical that changing the date should result in the order of the posts changing in the preview.

There may need to be a partial registered for the display of a post date. If not, then the entire content part will need to be refreshed (#36).