Improved logging support with log to file

[DanEngelbrecht]

• ADDED --log-to-console option, default is on, disable all logging output in console with --no-log-to-console
• ADDED --log-file-path option, default is no log file output, add path to json formatted log file
• ADDED --log-coloring option, enables colored logging output in console, default is non-colored
• ADDED --log-console-timestamp option, enabled timestamps in the console log, default is not to include time stamp
• CHANGED Stats output is not printed to StdOut and with formatted logging to log file if enabled
• CHANGED All logging now goes through logrus with the default logrus text formatting
• CHANGED Progress output in console now goes to StdOut instead of StdErr

Closes #220