OO-1283: standard users don't need write access to download a zip file

src/main/java/org/olat/core/commons/modules/bc/commands/CmdDownloadZip.java

@@ -35,12 +35,10 @@ import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.WindowControl;
 import org.olat.core.gui.media.MediaResource;
 import org.olat.core.gui.translator.Translator;
-import org.olat.core.logging.AssertException;
 import org.olat.core.logging.OLog;
 import org.olat.core.logging.Tracing;
 import org.olat.core.util.StringHelper;
 import org.olat.core.util.ZipUtil;
-import org.olat.core.util.vfs.VFSConstants;
 import org.olat.core.util.vfs.VFSContainer;
 import org.olat.core.util.vfs.VFSItem;
 
@@ -62,10 +60,7 @@ public class CmdDownloadZip implements FolderCommand {
 	@Override
 	public Controller execute(FolderComponent folderComponent, UserRequest ureq, WindowControl wControl, Translator trans) {
 		currentContainer = folderComponent.getCurrentContainer();
-		if (currentContainer.canWrite() != VFSConstants.YES) {
-			throw new AssertException("Cannot write to current folder.");
-		}
-		
+
 		status = FolderCommandHelper.sanityCheck(wControl, folderComponent);
 		if(status == FolderCommandStatus.STATUS_FAILED) {
 			return null;