Synch log file suggestions

Add a header with:

Job name and the lines of text from jobs.ini,
if not at least the source and destination.
Timestamp at start

and add timestamp at end.

If it's a preview log don't have the action in passed tense,

having:

deleted......file

in a preview logfile when the user got the job wrong can give heart attacks.

oh and line up the right handside by having shorter action descriptions padded to the length of the max