managed to reactivate all tests - (Task #5)

- Missing testoutput is due to some minor bug in freecad itself. see:
https://forum.freecadweb.org/viewtopic.php?f=10&t=39732

---
Task #5: Implement Import Functionality

test/json_io/parts/test_json_part.py

@@ -58,8 +58,8 @@ def test_parse(self):
         self.assertEqual(json_part.shape, "BOX", "Property is correctly set")
 
         self.assertEqual(json_part.length, 40, "Property is correctly set")
-        self.assertEqual(json_part.width,  10, "Property is correctly set")
-        self.assertEqual(json_part.height, 30, "Property is correctly set")
+        self.assertEqual(json_part.width,  20, "Property is correctly set")
+        self.assertEqual(json_part.height, 10, "Property is correctly set")
         self.assertEqual(json_part.radius, 0, "Property is correctly set and")
 
         self.assertEqual(json_part.color, 12632256 << 8, "Property is correctly set")