Hide Cloudflare email, api key and zone id if set via constants

[tangrufus]

wait for

• Override option values by constants and filters wp-better-settings#67
• UI: Disable option form fields if constants defined wp-better-settings#78
• Add OptionStore::isReadyOnly wp-better-settings#95

[fagiani]

@tangrufus any chance this can be revisited?

[tangrufus]

Although undocumented, you can now set Cloudflare email, api key and zone id via constants:

define('SUNNY_CLOUDFLARE_EMAIL', '[email protected]');
define('SUNNY_CLOUDFLARE_API_KEY', 'aabbcc');
define('SUNNY_CLOUDFLARE_ZONE_ID', 'xxyyzz');

Once you defined the constants, the settings page on wp-admin becomes useless.
You can hide it the settings page by using remove_submenu_page or remove_menu_page. (This part won't be added into Sunny)