Divi Ghoster 5.0.57

Fix: Divi 4.10 compatibility
Fix: Issue with creating Ultimate mode theme copy on Windows

Fix potential issues with Ultimate Ghoster on Windows-based servers
Fix fatal error when enabling or disabling Ultimat Ghoster if the PHP exec() function is disabled
When enabling Ultimate Ghoster, detect if the theme slug already exists in the themes directory and if so, fail with a specific log entry
Add "Hide page creation options (including premade layout option)" checkbox in the Customization tab (allows this default Ghoster functionality to be disabled)

Fix: The Customization > Show Welcome Page for All Users option made the welcome page appear on admin pages other than the dashboard (index.php) page
Fix: In some cases, the Customization > Admin Dashboard Welcome Page setting may display a 404 error page instead of the intended page
Improved security related to the Customization > Admin Dashboard Welcome Page setting