Database rewrite

[sinus-x]

The current scheme has proven to be weak, as far as multi-beam setup goes. I think we'll have to change the scheme to something like

beam:<beam name>:active
beam:<beam name>:replace
beam:<beam name>:timeout
beam:<beam name>:admin_id
beam:<beam name>:...
wormhole:<beam name>:<channel id>:messages
wormhole:<beam name>:<channel id>:readonly
wormhole:<beam name>:<channel id>:logo
wormhole:<beam name>:<channel id>:...
user:<beam name>:<user id>:mod
user:<beam name>:<user id>:home_id
user:<beam name>:<user id>:nickname
user:<beam name>:<user id>:...

User would be registered to one beam, not bot-wide.