Added "Console" and "Socket" appender types to match log4j

The ConsoleAppender may now be referenced using one of the following
types: "Console" (preferred), "ConsoleAppender" or "console".

The SocketAppender may now be referenced using one of the following
types: "Socket" (preferred), "SocketAppender", or "socket".
Configuration: more support for log4j JSON configuration

Woodman did not support the following log4j-like configuration where
the "logger" property contains more than one Logger definition.

{
  "configuration": {
    "loggers": {
      "logger": [
        { ... },
        { ... }
      ]
    }
  }
}
Documentation: configuration section completed