[CORL-158] Open/Close stream inside of configure tab (#2223)

* feat: Open or Close stream inside of configure tab

* feat: default disable/close commenting message

* fix: adjusted tests

src/core/client/admin/test/configure/__snapshots__/general.spec.tsx.snap

@@ -204,7 +204,7 @@ shared.
                 id="configure-general-sitewideCommenting-message"
                 name="disableCommenting.message"
                 onChange={[Function]}
-                value=""
+                value="Comments are closed on this story."
               />
             </div>
           </fieldset>
@@ -705,7 +705,7 @@ moderation panel.
                 id="configure-general-closedStreamMessage-content"
                 name="closeCommenting.message"
                 onChange={[Function]}
-                value=""
+                value="Comments are closed on this story."
               />
             </div>
           </div>

src/core/client/admin/test/fixtures.ts

@@ -15,10 +15,12 @@ export const settings = {
   },
   disableCommenting: {
     enabled: false,
+    message: "Comments are closed on this story.",
   },
   closeCommenting: {
     auto: false,
     timeout: 604800,
+    message: "Comments are closed on this story.",
   },
   customCSSURL: null,
   domains: ["localhost:8080"],