Moved companies loading in order to get the full list before seller and buyer initializations.

Changed date format to fix chrome issue
Changed invoice title in dashboard : move from reference to object field
Add table view for invoices.
This table is navigable but is not linked with filters yet.
Styles must be improved
Sorts and filters are now linked to the list
Changed the way Expected amount is calculated integrating the DRAFT invoices
Hide reference field for business item in company and auto generate reference server side