Release 1.0

Preliminary release notes for the 1.0 release of OpenPOTD.

Multiserver:

• Allow different servers to add OpenPOTD at the same time.
• Allow custom prefixes to be set.
• Allow servers to set their own gold/silver/bronze roles.

Other:

• Allow people to toggle anonymity on the OpenPOTD website.
• Custom menus implementation works in DMs as well.
• Added exponential cooldown system for not solving a problem.
• Add a license (AGPL 3.0).