Log formatting cleanup

- Better handling of newlines
- When using $log with a jQuery message, display a truncated version of
the $.text() in console
- When displaying Error messages in debugger, place full stack trace in
additional data area and short message as the primary log message
- Give a few previously anonymous functions names so they produce more
readable stack traces

Attempted to fix #7 but determined it’s not possible to make stack
traces really awesome. The stack traces that need to be improved are
auto-generated by the browser with a console.error() call; there isn’t
a way to pass a custom stack trace to a console.error() call. Could
possibly fake the call and do a console.log with css formatting but it
wouldn’t be filtered by the browser as an error which could cause
confusion. Did some formatting work to improve the experience around
reporting stack traces in the logger.