[FIX] web_linkedin: link (in) the config_parameter with the correct group
[REF] OpenERP --> Odoo in various UI texts

Rebranding has been done in:
- data/demo files
- html templates
- help notices
- comments
- logger messages
- and other various messages

(Commit taken from odoo-dev:8.0-improve-openerp-odoo-rlu at rev 7deaa08)

Closes #1260