Fix documents cleanup (code manager, path rules, section page function)
Fix path rules generation and indexation
Fix back office page template edition
Fix process initial step and shipping step
Update publication section management on variant products
Fix order process shipping step
Merge pull request #1088 from inthause/APIWeb

Some fixes
Fix credit notes amount in CartDataComposer and OrderDataComposer (there is no tax notion here).
Add notifications on product returns + refactor commerce notifications + fixes.
Update short cart, adding content summary.