Added variability.ui dependency for mode.ui (as required bundle) to be

able to show presence condition and prevent NullPointerExceptions
Signed-off-by: Bergemann_Laptop <bergemann.sebastian@web.de>

org.fortiss.af3.mode.ui/META-INF/MANIFEST.MF

@@ -5,7 +5,8 @@ Bundle-SymbolicName: org.fortiss.af3.mode.ui;singleton:=true
 Bundle-Version: 2.13.0.qualifier
 Bundle-Activator: org.fortiss.af3.mode.ui.AF3ModeUIActivator
 Require-Bundle: org.fortiss.af3.mode;bundle-version="2.13.0";visibility:=reexport,
- org.fortiss.af3.state.ui;bundle-version="2.13.0";visibility:=reexport
+ org.fortiss.af3.state.ui;bundle-version="2.13.0";visibility:=reexport,
+ org.fortiss.af3.variability.ui;bundle-version="2.12.0"
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Bundle-Vendor: fortiss GmbH