Bug 558529 - Use configured colors for revision "by age"

Use the new configurable JFace colors for the newest and oldest
revision as end stops of the gradient. Just in case none should be
defined keep using the hard-coded stops.

Change-Id: Ia67e748f72aabe79a024ac829229fa6a5614a5eb
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2 files changed