Multi-network issues

[linuxdaemon]

Certain data are stored without storing what network they are for, only a channel or a nickname, leading to conflicts and exposure of data when running a single bot instances on multiple networks.

• profile.py pagination data is stored by channel+nick
• horoscope.py sign data is stored only by nick
• quote.py stores quotes per channel+nick
• lastfm.py and librefm.py both store accounts based only on nick
• karma.py stores points based on nick and chan
• history.py stores seen data by nick+chan
• herald.py stores heralds by nick+chan
• grab.py stores grabs by nick+chan
• factoids.py stores factoids by chan
• badwords.py stores badwords by chan
• weather.py stores locations by nick
• profile.py stores data by nick+chan