Added new commands and config options

Added mostplayed command
Addded multiple config options: websiteUrl, enablingVoting, enableChat,
welcomeNewDjs, disabledCommands.
Added configManager (configMgr) as wrapper around calls to config
properties: configMgr.get('configProperty', defaultValue).
Update config.js
Delete config.js
Wtf
Merge branch 'master' of https://github.com/lakario/snarl