Previously the ADMIN_FILTER_DATA_FIRST setting was a True/False
setting that was taking over all the admin views leaving
operators without the opportunity to set this setting to views
individually.
This patch changes the setting to a dict where it can be specified
which panels/views will implement this setting individually.
Implements blueprint: admin-views-filter-first
Change-Id: I50deab878f68c1cc519aa9b47feaa2c58bb8eacc