* accounts/*: updated account view
* updated carts with new features
* updated carts with new features
* common/models.py: fixed a field length issue
* knapsack.py: pretty printing
* products/models.py: added a feature to get a product hierarchy
* suppliers/models.py: fixed a field length issue and added custom price field for product class
* templates/base.html: minor update
* templates/nav.html: added mailbox link + some others stuff
* wallets/*: added new features
* regularcom: added mailbox url, homeview and disable celery the time to fix an issue with it
+ mailbox: added a mail + notification manager module
+ conf/locale/fr/LC_MESSAGES/django.po: translation file for french
+ suppliers/tasks.py: additionnal useless file for suppliers app
* moved bootstrap folder to a deprecated state