Add default action to execute in ForEach when none of the clien matches the query. Fixes #12

[tnymlr]

Added a new XML node into ForEach action configuration - none.

Extracted application of if action into separate function which returns result that indicates of a client matches the query.

ForEach tracks the execution of do_run_if and exectues actions mentioned in none node if none of the if were able to find a match