*added sale_wizard.xml in the update_xml tag of terp file

*added a transition in workflow of sale_order + modify the wizard of invoicing line (wizard_sale_line_invoice.py) so that if all the lines of a sale_order have been 
invoiced, its state is set to 'progress' and the workflow is updated
*added a button on form view of sale_order_line in the form view of sale_order, to call the wizard for invoicing that line (visible only if the line is in 'confirmed' 
state)
*added a domain on Sales Management/Sales Order Lines/Uninvoiced Lines to filer on state <> 'draft' and state <> 'cancell'
*added a menuitem to see all the sale_order_lines

bzr revid: qdp-9fc9639961f28893e202d48b532e453c584c6679