ElectricCodeTabs: always display the same option that the user chose

[zenorocha]

When a user clicks on a code tab, here's what we need to do:

1. Save that information on local storage;
2. Re-render all code tabs on that same page with this new option;
3. On navigation and first page load, we read from local storage. If empty, show the first one, if not render the right tab.