Blender Git Loki

Annotation Eraser: Only operate on the active layer

Since we aren't exposing per-layer locks here (as we want to avoid
having lots of work enabling/disabling locks), the eraser now only
erases strokes on the active layer

Cleanup: Assorted little tweaks/moving code around

Annotation Eraser Tweaks

* Remove the "soft" modes from the annotation eraser. Now, erasing
strokes will immediately remove the stroke points. This works better
for annotation use cases, as when erasing strokes, you usually just
want to get rid of the notes quickly.

* Show eraser brush size setting in the topbar/tool settings when the
eraser tool is active. (Note: This setting still uses the userpref
setting, which we should move to the scene toolsettings instead
so that it doesn't get reset with each session)

Cleanup: Deduplicate stroke freeing code

Merge branch 'blender2.8' into greasepencil-object

Fix error when render

The v3d pointer is null when renders, so need to be checked before use it.

Fix errors and changes after merge

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/gpencil/drawgpencil.c
source/blender/editors/gpencil/gpencil_brush.c

Merge branch 'blender2.8' into greasepencil-object

Move Vertex Opacity from Tolsettings to View3D

The vertex opacity is a parameter of the view and not of toolsettings as it was defined before.

With this commit we moved the last parameter to control the view look to the right place.

Verify View3D is vailable before using it

This variable is not loaded when render.

Merge branch 'blender2.8' into greasepencil-object

New Main switch at view level for Onion Skin

The switch is on top of GP datablock onion switch and allows to show/hide all datablocks in the view.

Move Edit LInes and Multi Edit LInes switch at View level

This overlay must be by view, not by object.

Also changed the name to "gpencil_*" to some grease pencil paper to keep name consistency.

UI: Define a Header Text for Overlay Panel

Try to fix the rim problem when the image ends outside view

The rim is disabled if the image to rim extends beyond the borders.

Improve Blur qualitty when the zoom factor changes

Now the number of pixels to blur depend of the pixel size and not as fix values as before.

Fix animation path typo error

This error made impossible animate modifiers.

UI: Reorganize Overlay panel

The separated panel for Paper and Options has been replaced by an unique panel, because two panels display too much empty space between them and make easier the maintenance.

Following how works other Blender panels, the paper options are hiddden when the paper is disabled, only required parameters are displayed.

We keep Onion switch here because is still pending the decission to use a general switch (mesh and GP) or keep separated switches.

Merge branch 'blender2.8' into greasepencil-object