Subcategories not shown in classification table

[esyriani]

Describe the bug When I have a subcategory, the table only shows the top categories. The classification table should show all columns, including those of subcategories (recursively). Solving this should also solve the same problem when exporting the table to csv.

To Reproduce Steps to reproduce the behavior:

1. Go to Language Composition project
2. Go to the Classification phase
3. Click on Results > Table
4. Column "Tool support" has no value

Expected behavior I should see the following columns:

MDE-based	Tool support	Tool name	Degree of automation
Yes	Yes	The Tool	Automatic

Screenshots

Desktop (please complete the following information):

• OS: Windows 7
• Browser Firefox

Additional context This is related to issue #18