Merge branch 'releases/4.0.x' into develop

Conflicts:
	org.eclipse.scout.rt
	org.eclipse.scout.rt.incubator
	org.eclipse.scout.sdk
diff --git a/org.eclipse.scout.parent/pom.xml b/org.eclipse.scout.parent/pom.xml
index 6828044..bd90ea2 100755
--- a/org.eclipse.scout.parent/pom.xml
+++ b/org.eclipse.scout.parent/pom.xml
@@ -368,6 +368,9 @@
             </excludes>
             <!-- Kill test JVM if tests take more than 5 minutes (300 seconds) to finish -->
             <forkedProcessTimeoutInSeconds>300</forkedProcessTimeoutInSeconds>
+            <!-- do not abort on test failures -->
+            <failIfNoTests>false</failIfNoTests>
+            <testFailureIgnore>true</testFailureIgnore>
           </configuration>
         </plugin>
 
diff --git a/org.eclipse.scout.rt.rap.target/.project b/org.eclipse.scout.rt.rap.target/.project
index ac86c91..3758342 100644
--- a/org.eclipse.scout.rt.rap.target/.project
+++ b/org.eclipse.scout.rt.rap.target/.project
@@ -27,7 +27,6 @@
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.sonar.ide.eclipse.core.sonarNature</nature>
 		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>