Add Domain > Primary Domains setting should have a warning of some kind

[marcusquinn]

It's not entirely clear that the "Primary Domain" setting is a danger to users when adding new domains, as this sets the main domain for the entire WP Multisite WaaS.

Suggest:

1. Renaming this to "Main WP Multisite WaaS Domain"
2. Changing the description to: "Set this as the main WaaS website domain"
3. Change the toggle button selected colour to Red.
4. Perhaps a warning pop-up: "Are you sure you want to change the main domain used for this WP Multisite WaaS website?

There's further confusion when using Closte.com for hosting, and maybe others, where the term "Primary Domain" is used to choose between www. or non-www. So, too easy for users to mix these settings up with unintended consequences in changing and potential lock-out from their main website, with all the URLs changed, and no small task in restoring the correct main domain for the WaaS site.

/wp-admin/network/admin.php?page=wp-ultimo-domains

//wp-admin/network/admin.php?page=wp-ultimo-edit-domain&id=13&model=domain

[marcusquinn]

Hold that thought - I may have got this the wrong way around :)

It still needs better wording. Let me come back to it with a better edit for the main description of this ticket...