Add frontend tests for comments

src-ui/cypress/fixtures/documents/1/comments.json

@@ -0,0 +1,46 @@
+[
+    {
+        "id": 10,
+        "comment": "Testing new comment",
+        "created": "2022-08-08T04:24:55.176008Z",
+        "user": {
+            "id": 1,
+            "username": "user2",
+            "firstname": "",
+            "lastname": ""
+        }
+    },
+    {
+        "id": 9,
+        "comment": "Testing one more time",
+        "created": "2022-02-18T04:24:55.176008Z",
+        "user": {
+            "id": 2,
+            "username": "user1",
+            "firstname": "",
+            "lastname": ""
+        }
+    },
+    {
+        "id": 8,
+        "comment": "Another comment",
+        "created": "2021-11-08T04:24:47.925042Z",
+        "user": {
+            "id": 2,
+            "username": "user33",
+            "firstname": "",
+            "lastname": ""
+        }
+    },
+    {
+        "id": 7,
+        "comment": "Cupcake ipsum dolor sit amet cheesecake candy cookie tiramisu. Donut chocolate chupa chups macaroon brownie halvah pie cheesecake gummies. Sweet chocolate bar candy donut gummi bears bear claw liquorice bonbon shortbread.\n\nDonut chocolate bar candy wafer wafer tiramisu. Gummies chocolate cake muffin toffee carrot cake macaroon. Toffee toffee jelly beans danish lollipop cake.",
+        "created": "2021-02-08T02:37:49.724132Z",
+        "user": {
+            "id": 3,
+            "username": "admin",
+            "firstname": "",
+            "lastname": ""
+        }
+    }
+]