WebStorage Test: local storage

## Description

This test validates that store data using Local Storage which means that close the page, and re-open it, the data saved before should be loaded again.

## Preconditions

1. Click the "Clear" button, refresh the page once and then check if the page shows "You have viewed this page 1 time(s)"
2. Close the page, re-open it and then check if the page still shows "You have viewed this page 2 time(s)"
3. If the above two steps are all true the test case pass, otherwise it fail

## You have viewed this page an untold number of time(s).