Blender Git Loki

Cleanup: Remove duplicated condition

Remove brush mode panel and add icon

The panel was not needed and was replaced by icons in the main panel.

Notice: I have reused standard icons, but maybe need custom icons in the future, but we will wait to the main redesign 2.8 interface task.

Merge branch 'blender2.8' into greasepencil-object

Change Brush names to organize alphabetically

As the panel is sorted by name, it's better to have names that keep brushes grouped.

Change Eraser icon depending of eraser mode

Remove unused and duplicate code

After moving bGPDbrush to Brush, some data is duplicated or not used.

Fix problem when change mode if no brushes

When chnage mode, create the default brushes if they are missing.

Fix problem with Brush Datablock icons

The icons of grease pencil brushes did not work because the poll return false.

WIP: more work moving datablock

All references to old bGPDbrush struct has been removed and basic functionality working again now.

Still the icons of the brushes are missing.

WIP: Fist step moving bGPDbrush to Brush datablock

Still a lot of work ahead, but this commit is to save the situation before remove bGPDbrush struct.

Code refactor: Missing in previous commit

Code refactor: Rename fields to prepare for ID datablock

Rename some fields to prepare the code to move the brushes (bGPDbrush) to reuse ID datablock ID_BR (Brush).

Merge branch 'blender2.8' into greasepencil-object

Cleanup: Rename brush input_samples field

Cleanup: Rename brush type field

Cleanup: Rename brush icon field

Cleanup: Rename subdivide field

Cleanup: iterator macros

Merge branch 'blender2.8' into greasepencil-object

Enable Settings by default in predefined brushes