Blender Git Loki

Cleanup: Delete unused code

Small UI Fixes

* Fixed comment about the "Surface" panel. It's used after all
(as a parent for two others). Adjusted comment to make that
more obvious.

* Don't show decorators on the Parent Relations panel.
None of those settings should be driven/animated.
Maybe we put it back for overrides later though?

Cleanup: Move some GP Object specific types to their respective files

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Render process ok. spin lock ok. DON'T COMPILE

Cleanup: Remove a few more references missed earlier

Cleanup: Remove all old panels that Annotations will not be using

Remove various checks used in the general GP layers/data panel for isolation the GP Object

UI Tweak: Disable property split for GP Layers panel

There's just a single property here (opacity) under a
list widget that spans the full width of the panel.
It's not really worth having the half-size widget here.

Decouple GP Object's "Layers" panel from that used for "Annotations"

UI: Simplify Panel default closed

Add depsgraph support for gpencil_modifiers_foreachTexLink

More depsgraph missing: modifiers_foreachIDLink

Continue modifying files. Don't compile!

Changes to integrate depsgraph evaluation for modifiers

Still pending:

- void DepsgraphNodeBuilder::build_object
- void DepsgraphRelationBuilder::build_object

Merge branch 'blender2.8' into greasepencil-object

New functions for ID Linking

Added almost all offline render code. adaptation pending, don't compile!

turn off freestyle. preserve edge mark ops to to edit older files.