status.sh - Repack everything into functions

[andresgongora]

All variables that are displayed should be "provided" by a function with the appropriate name, instead of being stored in variables.

That way, we can easily add extra functionality in a modular and salable fashion. For example, a function called getExternalIP might do several checks to find the best tool to get the IP instead of resorting only to dig or wget (as suggested by @olmari ).

This also helps with #20

[andresgongora]

First half done - As this is modular, it can be done in incremental steps

[andresgongora]

Solved in #30