Reordering tabs via extension breaks tab hiding

[Keith94]

Steps to reproduce

1. Install Simple Tab Groups (experimental) and Order Tabs by Domain
2. Create two tab groups each containing various tabs
3. Order tabs via domain via the toolbar button

Expected results

Hidden tabs from other groups should not appear

Actual results

Hidden tabs from other groups appear in the sidebar

Screen capture:

[Smile4ever]

Seems to be caused by https://github.com/eoger/tabcenter-redux/blob/5c968e03e109c515f4ee441e9a64ab1bfb202000/src/sidebar/tablist.js#L125-L140

which does not take the "hidden" property into account.

If that's the case, it should be reproducible by these steps:

• Hide a tab (that will need to be moved when you order by domain)
• Reorder tabs by domain -> hidden tab is shown

[Keith94]

Nice detective work! I hope that's an easy fix.

[Keith94]

@eoger Thank you for the fix