added email overview for all emails being sent today
Added functionality to send previews for emails that have passed. Also put the estimated time in to send the live email in the header of the preview email.
modified the email sending to include an override for emails are created/modified to send after the current time. This fixes an issue where an email misses being sent.
Kept emails that were set to send today but before the current time from getting an estimated send time. Removed the send override checkbox from the template form.