[FIX] correctly forward context in graph view

the new graph view silently ignored the context when doing its rpc
read_group.  Usually, it's not really a problem, which is why it is only
now being fixed, but some models actually use the context in read_group.
(for ex, account_entries_report)
[FIX] Previous move subtleties
[IMP] Assign all destination moves at once, add packaging
Merge pull request #2603 from odoo-dev/8.0-wmsstaging10-jco

8.0 wmsstaging10 jco
[FIX] account_voucher: convertion rate of purchase receipt

The conversion of currencies in vouchers are made based on payment_rate_currency_id field (instead of usual currency_id).
This field was not present in the purchase view and not correctly set when we change the journal (and thus the currency) which was leading to rates of 1. With a rate of 1, the amount is equal to the currency amount (which is rarely correct). opw 611254
[FIX] website_twitter: display setup/debug info only for website editors, not visitors
[FIX] auth_ldap: remove unused sql column
[FIX] account_voucher: import invoices, sign according to transaction type
[IMP] crm: make code of merge opportunities overloadable
[FIX] website_blog: portal users should not be able to read unpublished blog posts
[FIX] models: only check existance of inverse_field for one2many fields
[IMP] mail: avoid sending an email twice

In some specific conditions (e.g. admin logging during cron run, concurrent update), writing on the mail object may fail, triggering a rollback of the transaction.
As the write was done after the SMTP sendmail action, an email could be sent twice (state not correctly put, would be retried at next process of the email queue).
This patch provoke the error before the sendmail action and thus avoids sending the email.
Fixes #552
[IMP] base: safer locking at user login

When a users connects, a lock is taken on the res_user table to modify the last login date. If another running transaction uses a foreign key to res.users (e.g. write_uid column), postgres may detect the update as a concurrent update and rollback the transaction.
In pg 9.3, the lock_strength parameter 'NO KEY' allows a weaker lock which is less likely to break another transaction.
Fixes #552
[FIX] bus: prevent error popups when longpolling requests are interrupted

1b9c404 modified the /longpolling/poll requests
to use openerp.session.rpc() instead of openerp.jsonRpc().
In order to properly disable error popups, an
explicit preventDefault() call is now required.
[ADD] website_forum: added new funtionality to post Articles and Discussions also on forum insted of only questions. On articles and discussions users kan post multiple reply on each post insted on only one reply per post and users will able to post reply on any other reply. in list posts will be default sorted by relevancy. show introduction message when people not logged in.
[ADD] website_forum: added demo data for article and discussion.
[FIX] wms: fix lookup of xmlid route_warehouse0_buy

Fixes #2610 courtesy of gurneyalex
[FIX] l10n_be: Fix BS and P&L
[IMP] improved code to use cookie instead of session to show introduction message and allow only 2 leval reply funtionality in discussion and article posts.
[I18N] Update translations from Launchpad 8.0 branches

server: rev. 26 rev-id launchpad_translations_on_behalf_of_openerp-20140923072744-tkfs0yinu8msjh09
addons: rev. 39 rev-id launchpad_translations_on_behalf_of_openerp-20140923072715-5j7qvnuvmmb1zzy1
web: rev. 23 rev-id launchpad_translations_on_behalf_of_openerp-20140923072757-jvh9l6r2x0vfcyhb