Addons option
This removes the 'use_owner' option feature from rB61c8ed40f5df.
(this wasnt working well when addons are enabled and when switching
workspaces)
Now Addon filtering is just bypassed for Import/Export menus.
(by introducing/setting bl_owner_use_filter = False)
Maniphest Tasks: T58842
Differential Revision: https://developer.blender.org/D6740
Internally tool settings have been moved to the 3D view.
Added the ability for to draw panels from another space/region
so they can be mirrored in the properties editor.
In the workspace properties a mode can now be configured that is
automatically enabled when switching to the workspace.
This is a test to validate how well it works. The weak point is
that if you don't have an appropriate object already select it will
not switch modes.
See T56475.
