Added index refresh to SQL API indexing policy editor (#306)

* Index refresh component introduced

- Made all notifications in Mongo Index editor have 12 font size
- Added indexing policy refresh to sql indexing policy editor
- Added "you have unsaved changes" message, replace old message for lazy indexing policy changes

* formatting changes

* addressed PR comments

src/Explorer/Controls/Settings/SettingsSubComponents/IndexingPolicyComponent.test.tsx

@@ -25,7 +25,9 @@ describe("IndexingPolicyComponent", () => {
     },
     onIndexingPolicyDirtyChange: () => {
       return;
-    }
+    },
+    indexTransformationProgress: undefined,
+    refreshIndexTransformationProgress: () => new Promise(jest.fn())
   };
 
   it("renders", () => {