[FIX] web: list views: bubble up failed deferreds. [FIX] web: list view group: always call post_render method
[FIX] web: list views: bubble up failed deferreds.
[FIX] web: list view group: always call post_render method

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