Don't flood error messages when processes are out of defined range.

If promises are not in the desired state, then this is recored via cf_verbose,
not via cf_error. cf_error is for failures that cannot be fixed.
Merge pull request #331 from vohi/silence_process_out_of_range

Don't flood error messages when processes are out of defined range.
Document change to process logging
add some classes to not display some messages when people run hardcoded failsafe many times