Fixed issue #8 "move dmps in a timestamped-sub-directory to avoid collisions"
The format of the subdirectory is "yyyy-MM-dd_HH-mm-ss_S".
Includes fix of bug which caused the dump download to fail if dump directory setting is not the default.
Merge pull request #13 from codingphil/bug/8-timestamped-sub-directory

Fixed issue #8 "move dmps in a timestamped-sub-directory to avoid collis...