EPE-49 Validate Server prior to Submit.

Improved server "active" detection to happen quicker and earlier.

Fixes EPE-49

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #126 from GordonSmith/EPE-49_ServerValidation

EPE-49 Validate Server prior to Submit.

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>