Issue 269, removed usage of tune icon

[RaviKumarAgurla]

Closes #269

[MisRob]

Hello @RaviKumarAgurla, thanks for volunteering.

It seems there's misunderstanding caused by naming conflicts. Your changes remove tune/filter icon completely (to be replaced by the different settings icon) whereas the original intent of #269 was to keep the tune/filter icon but only rename it to settings. It's quite old issue so I assume it was created before we introduced yet another settings icon. So I don't think we want to remove tune completely, even though the suggested new name for it is taken now. I will also close the issue since it's obsolete. Thank you for looking into it, even though I can't merge, it helped.