SourceGroup implementation always allow directories to avoid package …

…view skipping directories, even though it might contain some included subdirectories.

netbeans-gradle-plugin/src/main/java/org/netbeans/gradle/project/java/query/GradleProjectSources.java

@@ -303,7 +303,11 @@ private boolean rulesAllow(FileObject file) {
                 return true;
             }
 
-            return includeRules.isIncluded(rootPath, file);
+            boolean result = includeRules.isIncluded(rootPath, file);
+            // Directories are always allowed because otherwise
+            // package view might skip the entire directory, regardless that
+            // it might contain included sub directories.
+            return result || file.isFolder();
         }
 
         @Override