[FIX] web: properly encode db and addons URL parameters
[FIX] web: properly encode db and addons URL parameters

Passing the values unescaped could be a source of errors
and a XSS vector.

akretion/openerp-web,havt/openerp-web,havt/openerp-web,havt/openerp-web,havt/openerp-web,akretion/openerp-web,akretion/openerp-web,havt/openerp-web