Blender Git Loki

Merge remote-tracking branch 'remotes/origin/blender2.8' into soc-2018-npr

Merge remote-tracking branch 'remotes/origin/blender2.8' into soc-2018-npr

# Conflicts:
# release/scripts/startup/bl_ui/properties_scene.py

Paint: remove brush select paint_mode

Instead check which property has been set.

Merge branch 'master' into blender2.8

Cleanup: naming for paint modes

- Rename ePaint* -> PAINT_MODE_*.
- Use PAINT_OVERLAY_ prefix for eOverlayControlFlags.

Fix gizmo handler initialization w/ quad-view

It's not enough to get the active window region,
now the region is passed in as an argument.

Fixup for view3d collection name drawing when no active object

Merge branch 'master' into blender2.8

WM: enforce descriptions being NULL or defined

Without this bugs slip through that don't null check the descriptions
since many were set to empty strings.

Cleanup: python doc-strings

Indentation & trailing space.

Cleanup: python doc-strings

Indentation & trailing space.

Add active collection to viewport "name" stats

Only visible when in object mode.

Most of the time we will have the active object not being a part of the active
collection. So it is important to clearly communicate what is the active
collection, so users know for instance where new or appended objects
will be added to.

Add active collection to stats bar

Only show the collection name when in object mode.
It is not relevant in any other mode.

Util to get collection UI name

Note we still have hardcoded IFACE_("Scene Collection") in the outliner.
I'm ok with getting of them as well, though no strong feelings here.

Fix tool keymaps not working properly after recent changes.

Not sure this is the best fix, but this should be working. Regardless it seems
good to tag active tool keymaps as such.

Keymaps: minor code refactor to abstract some events, no functional changes.

Keymaps: reload key configuration when changing select mouse.

For configuration scripts that want to change keymaps based on this setting.

Depsgraph: fix missing relations for drivers on ShaderNode properties.

Also fix duplicate driver to target relations due to a redundant line.

GP: Don't calculate fast drawing when playing

Keymap: code refactor to makes some events changeable with parameters.

No functional changes.