Template Exports fails

[donker]

Description of bug

Although not implemented in the UI, Template export exists in SitesController of the Sites project. Calling this using WebAPI exposed one issue: if tabs were stacked hierarchically the exported template would be incomplete.

Steps to reproduce

1. Create a site where you move an old tab underneath a newer tab
2. Create your own Javascript front end and call into api/Sites/ExportPortalTemplate
3. Check template

Current result

Incomplete template

Expected result

Complete template

Affected version

• [x] 9.3.2
• [x] 9.3.1
• [x] 9.2.2
• [x] 9.2.1
• [x] 9.2
• [x] 9.1.1
• [x ] 9.1
• [x ] 9.0

[valadas]

Merged