Blender Git Loki

UI: moving the cursor to open other popovers

Match menu behavior

UI: popover now use menu style buttons

Also scale width with UI-scale.

UI: Initial popover support for panels

- UILayout.popover(.. panel_type ..)
A single panel
- UILayout.popover_group(.. panel categories ..)
Expands all panels matching args.

Currently used in the topbar for redo and paint options.

Overlay: face orientation

- fixed the blending with solid drawtype

Merge branch 'master' into blender2.8

Cleanup: de-dup popup/pie menu RNA definition

Also rename pupmenu -> popmenu

Cleanup: ui-link drawing code from logic bricks

Cleanup: style

Remove unused shader

Originally added for icon drawing, no longer used.

Cleanup: trailing spaces

Applied to newly added files in 2.8

Lattice Select Random, Mirror

D3165, D3166 by @ranjian0

Error in last commit

Edit Mesh: multi-object edge split support

D3161 by @JacquesLucke

Fix crash when opening properties editor

Opening as in activating one in an area that didn't contain a properties editor
before.

UI: add own icon rasterizer

Use software drawing, cache to an image at the requested pixel size.

Cleanup: style

Cleanup: variable naming

Merge branch 'master' into blender2.8

Cleanup: Get rid of context in editor 'new' callback

Requiring context means we can't easily create new editors to replace deprecated
ones in versioning code.
Think it's reasonable to give editors access to scene and area data for their
initial setup though. They mostly need it for setting "the view", as in,
scrolling values.

Also did minor cleanup in top-bar creation function.

Fix point density rendering in Cycles.