[Enhancement] Group widget messages by users (#367)

* Remove thumbnail

* Show grouped messages

app/javascript/widget/store/modules/specs/conversation/getters.spec.js

@@ -79,31 +79,41 @@ describe('#getters', () => {
         },
       },
     };
-    expect(getters.getGroupedConversation(state)).toEqual({
-      'Nov 18, 2019': [
-        {
-          id: 1,
-          content: 'Thanks for the help',
-          created_at: 1574075964,
-        },
-        {
-          id: 2,
-          content: 'Yes, It makes sense',
-          created_at: 1574092218,
-        },
-      ],
-      'Dec 14, 2019': [
-        {
-          id: 3,
-          content: 'Hey',
-          created_at: 1576340623,
-        },
-        {
-          id: 4,
-          content: 'How may I help you',
-          created_at: 1576340626,
-        },
-      ],
-    });
+    expect(getters.getGroupedConversation(state)).toEqual([
+      {
+        date: 'Nov 18, 2019',
+        messages: [
+          {
+            id: 1,
+            content: 'Thanks for the help',
+            created_at: 1574075964,
+            showAvatar: false,
+          },
+          {
+            id: 2,
+            content: 'Yes, It makes sense',
+            created_at: 1574092218,
+            showAvatar: true,
+          },
+        ],
+      },
+      {
+        date: 'Dec 14, 2019',
+        messages: [
+          {
+            id: 3,
+            content: 'Hey',
+            created_at: 1576340623,
+            showAvatar: false,
+          },
+          {
+            id: 4,
+            content: 'How may I help you',
+            created_at: 1576340626,
+            showAvatar: true,
+          },
+        ],
+      },
+    ]);
   });
 });