[FIX] website_sale: typo in tour
[IMP] crm: Use cookies to save utm instead of session.
[FIX] web: invoke fields_view_get with kwargs instead of positional args

The mapping old api → new api mistakenly takes the last positional argument as
the context (fields_view_get() has an extra parameter after context.)

Fixes issue #2063
[FIX] im_chat : search user method, split the sql query into 3 smaller
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-linux64