Merge pull request #1084 from inthause/APIWeb

Add new 'Rbs_Price_UserGroup' document and implement price targetId.
Refactor order process frontoffice code to reuse parts of it in return process.
Add new print template in common theme for pages dedicated to print.
Add return sheet rendering.
Clean up and code formatting.
Move alignment class into startOrderProcess block to be able to override them.
+ code formatting
Merge pull request #1085 from intportg/APIWeb

Refactor order process frontoffice code to reuse parts of it in return p...
Fix context on WEB API
Fix cart directive