Fix missing folders from db after copy operation

Author: jmendeza

src/main/java/org/craftercms/studio/impl/v2/repository/GitContentRepositoryImpl.java

@@ -886,7 +886,7 @@ public void createEmptyFiles(String siteId, Collection<String> paths) {
 	private void addEmptyFile(Repository repo, String siteId, String path) throws ServiceLayerException {
 		try {
 			File file = new File(repo.getDirectory().getParent(), path);
-			if (!file.createNewFile()) {
+			if (!file.exists() && !file.createNewFile()) {
 				logger.error("Failed to create file to site '{}' path '{}'", siteId, path);
 				throw new ServiceLayerException(format("Failed to create file to site '%s' path '%s'", siteId, path));
 			}

src/main/java/org/craftercms/studio/impl/v2/service/content/internal/ContentServiceInternalImpl.java

@@ -1130,7 +1130,6 @@ protected Set<String> getMissingFolders(final String siteId, final Map<String, L
 	 */
 	protected Set<String> getMissingFoldersForCopyOrMove(String siteId, Collection<ContentLifecycleItem> lifecycleItems) {
 		return lifecycleItems.stream()
-				.filter(item -> item.sourcePath() == null)
 				.flatMap(item -> calculateMissingFolders(siteId, item.repoPath()).stream())
 				.collect(toSet());
 	}