Blender Git Loki

Fix snap operator

There was a problem updating the scene due depsgraph missing tags

UI: Move draw on back button after lock options

UI: Remove menu icons

Implement Presets for Brush options

This is the first step to create a set of predefined settings.

UI: Add additive drawing option to top header

This option was a menu option and must be a switch.

DPIX and Snake's F12 is working now.

Merge branch 'blender2.8' into greasepencil-object

UI: Move lock options to Left Top Header

These options were not tool parameters but a general option, so we move to the same UI location used in mesh sculpt.

UI: Replace Weight Paint menus

Also some preparation for other modes

UI: More changes in menus

Fix: Forgot to rename a few properties in earlier RNA/DNA commit

Debugging small problem in threads, in lanpr_triangle_line_imagespace_intersection_v2()

Fix: Refresh issues in Topbar with Grease Pencil and Annotations

Cleanup: Remove unused code

RNA/DNA changes to further decouple Grease Pencil and Annotation settings where clashes occurred

* Decouple stroke placement settings for 3D view
* Ensure that proper thickness controls are used in the topbar

Fix: Don't show GP Object's layer data in the Annotation topbar settings

Fixed intersection calculation memory leak, fixed snake UI error, added F12 supporting functions.

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

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