Blender Git Loki

Objects: restore per object restrict view/render/select.

Note this is now separate from H key hiding, and meant for more persistent
ways to define which objects are relevant to the viewport or render.

This avoids some cases where you'd have to create collection specifically
to hide objects for viewport/render.

Objects: restore H key per object hiding.

H hides selected objects, Shift+H hides unselected objects, and Alt+H
reveals hidden objects.

This hiding state is distinct from restrict viewport and render, and
meant for temporarily hiding objects without affecting more persistent
collection hiding.

Object hiding is per view-layer, same as selection. It affects the
viewport and any preview renders in there, but not final renders.

In the outliner, different icons are now used for temporary hiding, and
restrict viewport and render. Hidden objects are greyed out.

Remaining design issues:

* For lamps we probably still want to keep their effect on the scene,
currently they are fully disabled by hiding. Arguably mesh lights or
even objects being reflected or casting shadows are not that different
but perhaps the special lamp exception from local view should remain.
* We need a feature still to disabled this hiding for specific viewports,
for render or animation preview where you want to see the entire scene
while working in another view.
* We need a new icon for restrict viewport, for now it uses a grid similar
to the 2.4 icon.
* Hiding objects does not preserve selection state as it did in 2.7,
it's probably convenient to support this again?

T55550: Workbench Shadows are incorrect in first draw cycle

Shadows uses the old location for light_direction. Maybe a merge
conflict.

Cleanup: remove some G.main from BKE's node.c

Validate some cases using G_MAIN instead (I don't think we want to work
on any other Main than G.main one when registering/unregistering nodes
etc.).

And when freeing, all ID not in Main shall now be tagged accordingly, so
we *should* not need to do that stupi search over all ntrees in G.main
to check wether we have to free it ourself or not!

UI: Use chevrons for number sliders, pulldowns and popovers

In the future popovers/pulldowns should have different indicators

Patch by William Reynish and Clement Foucault

Eevee: Move cache creation to main thread

This fix freeing hazard and use after free.

Cleanup: moar G.main removal.

Nice trick from blender2.8, we now can get active scene from active
window of windowmanager!

Fix crash activating the HUD w/o an active region

Cleanup: get rid of last non-thread-safe BLI_frand random generator func.

Cleanup: get rid of last BLI_frand usage.

Cleanup: use new BKE_mesh_iterator foreach_mapped helpers in WPaint gradient code.

Merge remote-tracking branch 'origin/blender2.8' into temp-eeveelightcache

UI: fix "Edit Source" operator

Revert "UI: fix "Edit Source" operator"

This reverts commit 109dbab593b183b17e474d3f92468b06c86684f2.

Accidental changes applied

UI: fix "Edit Source" operator

Merge branch 'master' into blender2.8

Particle edit: Fix missing hair in edit mode for new particle systems

Need to get away from thosae update flags in original datablocks.

Fix multisample textures were using default not local copies

The multisamples used were not the custom textures for GP.

Cleanup: De-duplicate overrides properties apply loop

UI: only show "Edit Translations" when addon used