Portal Log Gogo Command

This module adds some Gogo commands to interact with Liferay log just like the Control Panel section.
All the commands are within the "log" scope as follows:

• log:showAll, shows all the log categories set on the portal (use parameter "keywords" to filter results)
• log:showCustom, shows all the custom log categories set on the portal (use parameter "keywords" to filter results)
• log:availablePriorities, shows all the available priorities to be used with "addLogLevel" command
• log:addLogLevel, adds (or updates) a custom log level to the portal (use parameters "loggerName" and "priority" to specify the log level)