[document_page] FIX BUG: UI hanging when editing content. This was due to the api.depends on _compute_diff. Removing it because it's not really necessary since the field is not stored.
[document_page] page_id should be readonly.
Improve active field
[document_page] Update version number
[UPD] Update document_page.pot
[MIG] document_page_multi_company (#188)
* [MIG] document_page_multi_company
Added this feature from the old module directly in document_page