#11 simplified email-client style interface for admin

[James Heinrich]

Taken from support request #1592444:

Then through the admin panel I though the script would give me some (manual) options to take action on the results such as:
* add sender / domain to blacklist / whitelist
* add images / signature files to blacklist / whitelist
* mark a mail as spam and delete it from the mailserver
* unmark a mail as spam and leave it on the mailserver