Merge branch 'livedet-iris-2020' into 'master'

[livdet-iris-2020] Fix category type in view

See merge request !25

advanced/databases/livedet_iris_2020/1.json → advanced/databases/livdet-iris-2020/1.json

 {
-    "description": "Livedet Iris 2020 test database",
+    "description": "LivDet Iris 2020 test database",
     "environment": {
         "name": "Example databases",
         "version": "1.4.1"

advanced/databases/livedet_iris_2020/1.py → advanced/databases/livdet-iris-2020/1.py

@@ -37,4 +37,4 @@ class Test(View):
         elif output == "label":
             return {"value": bool(obj.label)}
         elif output == "category":
-            return {"value": int(obj.category)}
+            return {"value": np.cast["int32"](obj.category)}

advanced/databases/livdet-iris-2020/1.rst

+Test set of the LivDet-Iris-2020 Competition
+############################################
+
+For more information, please see http://www.iris2020.livdet.org/