Fix eslint issues for NotebookContentLient and other files

src/Explorer/Notebook/NotebookComponent/reducers.ts

@@ -50,6 +50,7 @@ export const coreReducer = (state: CoreRecord, action: Action) => {
         .setIn(path.concat("language"), kernelspecs.language);
     }
     default:
+      //eslint-disable-next-line
       return nteractReducers.core(state as any, action as any);
   }
 };

src/Explorer/Notebook/NotebookContentClient.ts

@@ -228,11 +228,12 @@ export class NotebookContentClient {
 
   public async readFileContent(filePath: string): Promise<string> {
     const xhr = await this.contentProvider.get(this.getServerConfig(), filePath, { content: 1 }).toPromise();
+    //eslint-disable-next-line
     const content = (xhr.response as any).content;
     if (!content) {
       throw new Error("No content read");
     }
-
+    //eslint-disable-next-line
     const format = (xhr.response as any).format;
     switch (format) {
       case "text":