Blender Git Loki

Keymap: use action-tweak for node re-route

Avoids same kinds of conflicts as link-cut w/ box select.

Tool System: default node editor to select tool

With box select you can't cut-links with RMB select.

Fix T59300: Box select fails in node-editor

UI: correct error in recent UI cleanup

Cleanup: style

Merge branch 'master' into blender2.8

PyAPI: don't truncate enums in exception messages

Not necessary and confusing when only some of the items are displayed.

See: T59044

Hide Preferences header when opened in temporary window

Also, use full width of the area again for the header.

Cleanup: remove intermediate menu drawing function

Fix T58937: Appended menus to VIEW3D_MT_editor_menus are not displayed

UI: add UILayout.direction

Read only attribute, needed for introspection.

Remove colons in Preferences section group names

Shrink horizontal size of Preferences Window

Various improvements to Preferences buttons/layouts

* Header is now fully redundant. Added buttons to add studio lights under the Lights category.
* Removed redundant theme category dropdown
* Made the theme layout use layout flow, so it goes to single column when narrow, but multiple columns as you make it wider
* Made all the themes layouts consistent and all use property split fit with the rest of 2.8
* Fix UI Scale property so it doesn't flicker, by making it a number value rather than a slider - it's more correct this way anyway

UI: add method to draw menu contents

This supports expanding menu contents into an existing layout.

Needed to fix T58937.

Fix possible key collision w/ BKE_id_to_unique_string_key

BKE_id_full_name_get doesn't ensure unique output, use a simple
method to create a unique key, guaranteed not to collide.

Fix T59626: Outliner rename overlaps icons

Fix for T59219 was using low alpha-light grey for text background
so editing text would always be slightly brighter then the existing
background.

This causes outliner rename to have low alpha making text overlap
icons.

Use solid color to avoid issues with overlapping UI
elements in the future.

Fix T59579: Grease Pencil copy buffer loses material information

Mesh Batch Cache: Fix uninitialized loop variable

Merge branch 'blender2.8' into userpref_redesign