add more tests (#268)

* add more tests as STUBS

tests/api/test_new_file_TOWRITE.py

@@ -0,0 +1,9 @@
+from django.test import TestCase
+
+
+class TestX(TestCase):
+    fixtures = ["fixtures/categories.json", "fixtures/encoding_profiles.json"]
+
+    def test_X(self):
+        # add new file, check it is added and more (eg for videos it is transcoded etc)
+        pass