Preventing the Deletion of specific Sections in the Catalog

[B]Goals:[/B]

[B]1. Optimize current Category prefix/table by:[/B]

a. Get rid of CreatedBySystem field:

CreatedBySystem is used ONLY in 1 place:
Categories_tp.php, ItemIcon method:
if ($object->GetDBField('CreatedBySystem')) {
if (!$object->GetDBField('IsMenu'))

{ return 'icon16_section_menuhidden_system.png'; }

return 'icon16_section_system.png';
}

Seem like we can successfully use ThemeId = 0 check instead.

[B]2. Allow developer to prevent deletion of specific pages in structure[/B]

a. Rename IsSystem to "PageType" with 2 options:

• Virtual (User added)
• Template (generated from Theme Template, including container sections)

b. Create new field "Protected" with 2 options:

• Yes
• No

c. ALL Sections where PageType=Template automatically marked as "Protected = Yes"

d. ANY Protected section can NOT be (unless in DEBUG):

• Changed Status (approved/decline) field
• Changed Protected (yes/no) field
• Deleted
• Edited Filename or Actual name?
• Edited Design Template