BUG-15021 We can´t access to the Files that are inside a folder SOLVED

- single click.
- The click event was changed to a double click event in order to display the directory content, moreover, the "expander" was removed beacuse it is already in the
the tree on the left side.
Merge pull request #2446 from marcoAntonioNina/BUG-15021

BUG-15021 We can´t access to the Files that are inside a folder SOLVED