Use links instead of the buttons.
Avoid extra GET parameters on the links.
Revert "Accept GET for all POST addresses on admin panel."

This reverts commit 134f94d36cb8c1ff011f8e11e93a56e7aab8e70c.

Conflicts:
	web/admin.py
Remove Postgres suffix from specific errors.
Split response report part on worker/receive.py.
Add IMAP4SSL support.
Process DMARC reports.
Add changes to the README.
Rename the conf directory.