Layout, logo, text, and copyright adapted for Center releases. Refs: #15.
Uses System properties 'appVersion' and 'buildDate' for displaying version information and build date.
Build number added. Refs: #15.
Uses System property 'buildNum' instead of hard-coded data.
For the related Center discussion and voting see
http://forum.blackboxframework.org/viewtopic.php?f=4&t=133

Signed-off-by: Josef Templ <josef.templ@gmail.com>
Merge pull request #3 from BlackBoxCenter/issue-#15

Refs: #15.