Fix welcome page by adding dependencies to required plugins

Issue-Ref: 3845
Issue-Url: https://af3-developer.fortiss.org/issues/3845



Signed-off-by: Simon Barner <barner@fortiss.org>

org.fortiss.af3.rcp.application/META-INF/MANIFEST.MF

@@ -57,5 +57,6 @@ Require-Bundle: org.fortiss.af3.rcp.help;bundle-version="2.15.0",
  org.eclipse.swtbot.forms.finder;bundle-version="2.0.5";resolution:=optional,
  org.eclipse.swtbot.junit4_x;bundle-version="2.0.5";resolution:=optional,
  org.eclipse.ui,
- org.eclipse.ui.intro;bundle-version="3.4.100"
+ org.eclipse.ui.intro;bundle-version="3.4.100",
+ org.eclipse.ui.intro.universal;bundle-version="3.3.500"