[IMP] product: filter and group by category_id on product.template

Was removed (for unknown reason) during refactoring of product and template (opw 611699)
[FIX] project,project_issue: display order

Task/issues shuld be sorted on descending priority
[FIX] correct domain for autocomplete in many2one

The domain was using '=', which is correct when selecting a specific
element in autocompletion, but not when searching for all elements
matching a string.
[FIX] missing row CSS
Merge branch '8.0' of github.com:odoo/odoo into 8.0
[FIX] fields: *2many related fields should not be read as superuser

one2many and many2many fields depends on the security rules.
For instance, on products, with the taxes_id many2many fields, you only see the taxes of your own company, thanks to the multi company security rule
With related *2many fields, if you browse it with superuser, you will have all records of the one2many fields, even those you are not allowed to see, as superuser ignores security rules.

For instance, taxes_id of product.product is a related of taxes_id of product_template (through the inherits on product.template), and you should see the same taxes on the product template and on the product product (variant). This is not the case if the fields is read using the superuser
[FIX] tools: mail: fixed read more link tha could be placed in a block to be removed, being considered as a quote
[FIX] share: fixed crash when using the share wizard, linked to the new api.
[FIX] res_partner: fixed display of simplified partner form view (image and fields display was messy)
[FIX] purchase: skip move if not linked to a purchase order

When this situation happens. the 'cost' is None and the web interface cannot handle this value, provoking a JS error. Thus, prefer to fallback on the standard way to get the cost: based on the current standard price of the product.
Fixes #1032
[IMP] point_of_sale: track session logins

the pos session now keeps track of the session logins, and that number is
included in in the order reference. This prevents orders generated in parallely
created sessions from having the same reference, and also helps reduce fraud.
[ADD] stock: add new report for package that only show package barcode
[FIX] mass_mailing: do not display templates void options menu when there are no option to display
[FIX] crm_partner_assign: allow employees to read the res_partner_activation model, fixing some access rights issues with the partner form view
[FIX] website_forum: portal user are allowed to delete forum post

If a portal user has engouh karma, this is possible for him, at least graphically, to delete forum posts, even if is not the author of it.
So, he should be allowed to delete forum posts in the ACL
[FIX] website translation bug

Sometimes a node can't be translated using the website Translate
mode. The translation is added to the Application term list but
the id of the view is not correct.

This happen when a translatable node is a children of a inherited
node whose branding could not be kept. data-oe-source-id was left
over because it was not registered in MOVABLE_BRANDING
[FIX] web: correct /web/proxy/load to set correct base_url
[MERGE] forward port of branch 7.0 up to d0a0b7d
[IMP] catch & warn about any TTFontFile exception

It turns out TTFontFile can throw not only TTFError (generic) and KeyError, but also ValueError (unknown cmap) and maybe others.

Just catch Exception, warn that the font couldn't be loaded and report why.
[MERGE] forward port of branch saas-3 up to 8f13e83