Remove file editing in Metalnx

File editing in Metalnx is not working in version 2.5.1
(the save button is missing), and this functionality will be cut
in the next version anyway (see irods-contrib/metalnx-web#293 (comment))

03_Metalnx_Handson_User-Training.md

@@ -67,7 +67,8 @@ Alternatively, you can clone the repository from the command line.
 - Upload inflation.txt to the collection 'earth_science'.
 - You suddenly relialize that what you just did doesn't make sense. This file belongs in 'economy'! Move the file to that collection.
 - Move into the 'economy' collection and check whether the file is actually there.
-- Move one level back and remove the 'earth_science' collection.
+- Move one level back and remove the 'earth_science' collection.  
+- You can now also delete the 'inflation.txt' file in your local directory.  
 
 
 
@@ -87,25 +88,32 @@ You start this exercise in the 'collections' tab.
 - Click on the tickbox next to the 'earth_science' and choose 'delete' from the action menu.
 
 
+
 </details>       
 
 
-**Exercise 2: Editing and downloading**
+**Exercise 2: Downloading, overwriting and previewing**
 
-- You realise there is a mistake in the uploaded data object inflation.txt. 
-  Edit the data object so the inflation for 2021 is 1.4%. 
-- Rename the data object to 'inflation_corrected.txt'.
-- Download the edited file from iRODS.
+- Inspect the contents of inflation.txt in Metalnx  
+- You realise there is a mistake in the uploaded data object.   
+  Download the file and edit it so the inflation for 2021 is 1.4%.
+- Upload the new version of the file, overwriting the previous one.
+- Rename the data object to 'inflation_corrected.txt'.  
 
 
 <details>
     <summary>Solution</summary>
 You start this exercise in the 'collections' tab.  
 
-- Go to the economy folder and click on 'view info' next to inflation.txt. 
-- Click the 'preview' tab. There, you can edit the file and save your changes.
-- Select 'rename' on the action dropdown, and type 'inflation_corrected.txt'.
-- Click on the download button (rightmost button in the top right corner).
+- Click on the 'economy' collection.   
+- Click on the 'view info' button next to 'inflation.txt'. On the next page, select the tab 'preview'.  
+- In the breadcrumb menu just above the filename, select 'economy' to go back to the economy collection.   
+- Click on the checkbox next to 'inflation.txt', then click on the 'action' menu and select the option 'download'.  
+- Make your changes locally (the file should be in your downloads folder.)
+- Back in Metalnx, click on the upload button, and select the file you just edited.   
+  Make sure the checkmark next to 'overwrite duplicate files' is checked. 
+- Click on the checkbox next to 'inflation.txt', then click on the 'action' menu and select the option 'rename', and type 'inflation_corrected.txt'.
+
 
 </details>