Prior to this commit, Bootstrap dropdowns, jQueryUI dropdowns and Odoo
dropdowns where styled independently leading to visual inconsistencies
and code repetition.
This commit will customize and improve the Bootstrap design using as
much as possible predefined variables. Then it will simply '@extend'
owl/jQueryUI classes in order to visually match the bootstrap ones.
Since dropdown classes are used in the top-menu (and its design is
partially shared with frontend apps), this commit provides the necessary
adaptations for this component as well.
stefanorigano (SRI)
1971bf3981