Blender Git Loki

Rework tab data storing to fix glitches & get rid of hacks

Fixes glitch where hovering an active tab would make the tab appear like
a hovered non-active one.

Still not the most beautiful solution, but it's as good as it can get
with our current UI code I'm afraid.

WIP: Basic rectangle primitive

Still pending to show the feedback ghost image while create the primitive.

Merge branch 'id_override_static' into asset-engine

Merge branch 'master' into id_override_static

Merge branch 'master' into fluid-mantaflow

Cleanup: Remove unused code

Merge branch 'blender2.8' into greasepencil-object

Cleanup: Change debug code

No functional changes.

Don't show redo buttons in top-bar if redo is not supported

Merge branch 'blender2.8' into topbar

Fix casting to bool before checking the flag

Cleanup: style

Cleanup: better names for new clnor edit operators enums.

Even if those remain local to the file, better have not to use too much
generic names, this can easily backfire in future.

Fix bad UI-related code in action callbacks of operators.

UI/drawing related code in action callbacks is really not nice,
especially since we do have a more consistent way to dynamically
show/hide some properties.

Note that transform_ops one remains rather hackish here (since we have
to use context for this case)... Not sure how to do it better so far.

Fix missing new weighted normals modifier case in Outliners' drawing code.

Fix some build warnings in new weighted normals modifier code.

Cleanup (no functional change expected).

Mostly styling, and some minor/harmless errors.

Merge branch 'blender2.8' into greasepencil-object

Fix error selecting camera

The edit shgroup creation must check active object to verify if it's a OB_GPENCIL

Merge branch 'master' into soc-2017-normal-tools

Conflicts:
intern/cycles/device/device.cpp