An enhanced logger

[matt-gadd]

Enhancement
The logger at the moment is very verbose on info, especially on larger projects. It might be nice if we have a rethink on what information is crucial to display for example:

• is displaying the sourcemap files neccessary (we can perhaps just display + map to the side of the actual file)
• do we need to display anything from runtime at all?

It would be nice to give more information on things we do during the build for example:

• show information on what flags have been enabled via the .dojorc or command line
• display status of pages visited as part of build time rendering
• display blocks being executed as part of build time rendering
• display what and why we code split for