[ADD]mail: The announcement bar (blue bar) to inform customers
[FIX] mail: correct announcement bar
[FIX] field email_from in crm.lead form view should have a widget email
[FIX] point_of_sale: ignore TOTAlY returns

Returns were partially ignored when typing keystrokes, thanks to a return; when event which equaled 13, but the default behaviour (press on the focused input/button) was not prevented. This is now the case thanks to preventDefault. For instance, just after a discount set, the focused input was pressed and the associated value was added when scanning a new product with the scanner. Therefore, if we entered a discount of 30%, scanning a new product added '0', the last pushed button, to the discount, and then added the product.
[MERGE] Forward-port of latest 7.0 bugfixes, up to rev. 9684 rev-id: dle@openerp.com-20131209145652-3g9rgnfz1w8k0whw
[IMP] mail: announcement bar only for screen
[IMP] mail: announcement bar: no dblclick
[FIX] web_linkedin dependencies
[FIX] crm: use email widget for email_from field in Opportunities form view
[FIX] mass_mailing: fixed label for template choice when creating a new wave of mass mailing
[FIX] mass_mailing: fixed model used for the mass mailing itself when creating a new wave. It was receiving active_model aka mass.mailing.create instead of the correct target model (ex res.partner when mailing partners). Also updated a field string to be clearer.
[FIX] mass_mailing: wave creation wizard: fixed closing button jumping after setting the wave name
[IMP] mass_mailing: added a link to create a wave directly from the kanban view
[FIX] mass_mailing: fixed previous fixes, because of order of loaded files
[MERGE] [FIX] mass_mailing: various fixes

- [FIX] mass_mailing: fixed model used for the mass mailing itself when creating a new wave. It was receiving active_model aka mass.mailing.create instead of the correct target model (ex res.partner when mailing partners). Also updated a field string to be clearer.
- [FIX] mass_mailing: wave creation wizard: fixed closing button jumping after setting the wave name
- [FIX] mass_mailing: fixed label for template choice when creating a new wave of mass mailing
- [IMP] mass_mailing: added a link to create a wave directly from the kanban view
[FIX] account: move purchase journal from demo to data
[FIX] stock: incoming shipment supplier quick create was creating a customer instead of a supplier
[MERGE] Forward-port of latest 7.0 bugfixes, up to rev. 9686 rev-id: dle@openerp.com-20131210160505-xdeeyooj07im8vz3
[FIX] purchase: set readonly on warehouse_id related field in stock.picking.in
[FIX] stock: stock picking workflow signaling on the wrong model

Since 7.0, signaling has changed, and the change was not wrongly done here, on the wrong model (self.signal_ instead of self.pool.get('stock.picking').signal_)
Therefore, created chained picking were not confirmed and were left in draft.
For instance, push rules were creating internal moves in draft state instead of confirmed state