Change of date format by parsing creation time

[pluempyx]

The date format of the creation time offered by Synergy (using 7.2 on linux) seems to have changed. This fixed the problem in my case.

[edbordin]

I have a different datetime format from both the original code and the format string in this pull request. I suspect it may be locale dependent. I'd recommend making it an option in the configuration file if you were going to take any action on this. (I'm using Synergy 7.6 on Windows)