Blender Git Loki

RNA: use is_dirty prefix for checking updates

Common convention for read-only update checks

Keymap: Make Ctrl-Tab toggles pose mode

Showing a pie menu is redundant since tab is already
mapped to edit mode.

Bypass the menu for pose mode toggle.

Draw Manager: simplify object mask usage

Remove flag defines, use object types directly.

Cleanup: minor changes to last commit, #2

Cleanup: minor changes to last commit

Merge branch 'greasepencil-object' into temp-greasepencil-vfx

Merge branch 'blender2.8' into greasepencil-object

Redo Rim FX Blur

The previous implementation was doing the blur in the wrong step and the result was very bad.

Now, the Rim mask is blured before blending with the final image.

Keymap: convenience Alt-MMB view switching

Allows to quickly set the view axis for advanced users,
Requested by @hjalti

3D View: support setting the relative axis

This sets the closest view axis, as if the current view is 'front'.

Useful to switch to the nearest left/right/top/bottom.

UI: add separators in properties editor header tabs.

Shaders: add target setting to material output node.

This makes it possible to have a single shading nodetree that contains
separate Cycles and Eevee shaders. By default the target is set to All
so shaders are shared.

Fix: Icons for annotation tools now show in toolbar

Viewport: tweak Z key shading toggle.

* Z now goes to solid mode when in lookdev or rendered mode.
* Alt-Z was broken after removal of texture mode, now toggles lookdev mode.
* Simplify code by turning it into a single operator.

GPU: avoid unnecessary multiple nodetree localize and output finding.

Icons for Grease Pencil/Annotation tools

These were in the icon_geom.blend file in SVN (lib/resources),
but needed to be manually added to the Export group for this to
work.

They are needed for use for use with the annotation tools.

NOTE: There are currently problems running the icon generation
scripts in the gp-object branch due to some file loading pointer
remapping problems there causing segfaults when running the script.
Thus, I generated these icons using the 2.8 branch, then cherry-picked
that commit over to this branch.

Cleanup: indentation

3D View: split view-numpad into two operators

Naming operator based on keys it used was strange,
split into view-axis and view-camera.

Refactored into a single option

Technical all options are still there for finetuning.

Refactor: SHOW->HIDE

HIDE needs less code also in the future, RNA still uses SHOW.