Add manual translate as default (#33)

* Added translate and switch auto buttons

* Tests updated

* Added hotkey & improved buttons visually

mocks/localStorage.ts

@@ -0,0 +1,9 @@
+Object.defineProperty(window, "localStorage", {
+    value: {
+        getItem: jest.fn(() => null),
+        setItem: jest.fn(() => null)
+    },
+    writable: true
+});
+
+export const localStorageSetMock = window.localStorage.setItem;