Add missing html content type
PHRAS-227 #fix watermark presentation mode for permalink
Merge pull request #1129 from nlegoff/watermark-col

[3.8.6][PHRAS-227] Watermark presentation mode for permalink
Merge pull request #1128 from nlegoff/content-type

[3.8.6] Add missing html content type for content negotiation
Fix api content type
Wrap into block
Merge pull request #1133 from nlegoff/helpt-text

[3.8.6] Wrap into block
Merge pull request #1132 from nlegoff/fix-api-content-type

[3.8.6] Fix api content type
Apply user rights on sub-definition