Warning Improvements by Xon 2.12.5

• Ensure HTML attributes using phrases are escaped properly
• Fix handling warning defaults (delete form not converted from XF1).

• Do not display link to warnings in Warning Alerts if the user can't see their own warnings.

• Fix "Usable by user groups: All user groups" for Warning Category permissions not sticking

• Support the "All user groups" option for Warning category permissions
  • This changes the defaults so this add-on no longer requires configuration for warnings to keep working on initial install
• Migrate Warning Category user group allowed list to known-good format
• Do not allow original Warning Category id 1 to be deleted

• Fix "Please enter valid title " error when using the Warning Service from custom code with a custom warning definition.

• Fix for "Trying to get property 'Category' of non-object" which could crop up.
  

• Remove 'custom warning' definition row on add-on uninstall
• Fix deleting warning categories

• Fix User Merging not applying/copying any Warning Actions group changes to the target account

• Fix uninstaller
• Fix error when computing when a banned user's ban expires

Thanks to @Recep Baltaş for funding this feature update

• Allow "hourly" option for warnings, warning definitions, and warning actions.
• Better compute the effective expiry date of warning actions when using "at or above point threshold" based off warning expires.
• Add option to control redirect after issuing a warning (to content or reported last referrer)
• Improve installer robustness when XF1 legacy placeholder add-on is removed.