Blender Git Loki

Update preview panel for grease pencil materials

Also some test changes to preview_grease_pencil.blend file

Clenup: PeP8

UI: Add previeww materials panel to grease pencil

Remove Grease Pencil Color Picker

This operator has been replaced by the new preview system.

Update previews when change material

Also split rna update for grease pencil parameters

Fix grease pencil cache update problems when change material properties

Since commit f84956738ba4e97f30553a675b643f6648afce1d 6/07/2018 12:33, the update of the materials was not working because depsgraph only update the current ID and not all related.

This fix the issue but need a review.

@aligorith Could you take a look and check if this is the best solution, I'm not sure about the fix, maybe we could add a relationship between material and datablock when create a new material.

Fix merge error and remove old code

This file was wrong from a previous merge and still had code about grease pencil modifiers that was not deleted when the GP modifiers were splitted.

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/object/object_modifier.c

WIP: Define a new preview blend file for grease pencil

The blend file is only a copy of old file. Put only as placeholder.

Merge branch 'npr_tess' of https://github.com/DarkDefender/blender into soc-2018-npr-tess-modifier

Modify code to standard api and style

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Move depsgraph tag after brush creation

If the brush was created, the tag was not working because it was done before the brush was available.

Move Overlay options to View3DOverlay

It's better to keep all overlays in the same RNA.

Replace "Notes" by "Annotations" to keep UI consistency

We can not use the word "Notes" in the UI for annotations because it creates confusion for the user.

Change some old grease pencil code to annotation

Fixed the error in annotation panel for other editors.

The main Notes switch for 3D View has been removed of the Notes panel because must be in the overlays.

Move annotations switch to Overlay struct

UI: Add again show annotation overlay switch

This was removed by error in a previous merge.