Unify unity default themes
Currently we do have two base templates: unityThemeValo and sidebarTheme.
That situation creates a lot of maintenance and configuration issues and should be resolved by unifying the styles into a single one.
The unification should start from the sidebar theme contents, which should however keep the name of the unityThemeValo. Certain elements of the unityTheme may need to be copied by validating missing classes. AdminUI required styles can be treated as optional - the endpoint is going to be dropped soon.
Special care must be given to public interfaces:
credential (password) reset
consent screens x2
active value selection
Note that it is intended to unify buttons presentation to the flat style used in sidebar. However specialized call-to-action style may need to be added in quite a few places.