WHOIS command

Roberto Sánchez requested to merge (removed):my_work into master

This implements the WHOIS command in a manner equal to the way its done on userList.js

The result is shown on a feedback label, maybe a better approach could be taken.

I've tried to reuse the time formatting function on userList.js, moving it to utils.js as it would now be used from various source files, i also renamed it to a more context agnostic name (formatTimeinSecs).

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