Add Two-Step Confirmation for Preset Deletion in RenderConfigWindow

Localization/Locale/en.json

@@ -5,6 +5,7 @@
   "ui.render_config.preset_name_placeholder": "New preset name...",
   "ui.render_config.preset_save": "Save",
   "ui.render_config.preset_delete": "Delete",
+  "ui.render_config.preset_delete_confirm": "Confirm?",
   "ui.render_config.preset_overwrite_title": "Overwrite Preset",
   "ui.render_config.preset_overwrite_desc": "A preset named '{0}' already exists. Do you want to overwrite it?",
   "ui.render_config.preset_delete_title": "Delete Preset",