updated readme, implemented caching for requests, improved logic for …

…refreshAfterPush, removed not required/annoying error notifications, enhanced status bar to display the correct data for the selected repository/branch

src/utils/statusBarUpdater.ts

@@ -1,4 +1,3 @@
-import * as vscode from "vscode";
 import { GitService } from "../services/gitService";
 import { StatusBarService } from "../services/statusBarService";
 import { handleError } from "./errorHandler";