conn.reply(), HTTP APIs, pref defaults, misc

* new conn.reply() API to send NOTICEs
* aucgbot.getHTTP(uri, moduleName, moduleVersion)
* aucgbot.getJSON() - like .getHTTP() but JSON parsed
* update some of the pref defaults
* bots pref to ignore bots that don't match the normal regex
* fix rc command and aucgbot.prefs.suDests
* UTF-8 encode log
[elf] improve scores storage immensely