Enhance product variant selection
Fix fatal error on section function
Merge pull request #1060 from loiccouturier/master

Fix fatal error on section function. Enhance product variant selection
Handle {_id:"..."} and {_i18n:"..."} in JSON properties in import process.
Update OrderList block and default structures.
Add CreditNoteSummary block.
Fix JS errors in section-function-manager BO directive.