EPE-14 Auto refresh on configuration change

Automatically refresh workunits list and ECL Watch "tree" on run configuration
changes.

Fixes EPE-14

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #101 from GordonSmith/EPE-14

EPE-14 Auto refresh on configuration change

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>