Blender Git Loki

UI: add back pivot point

Was accidentally removed after recent changes.

added comments to most functions

T55456: EditMode Drawing

- Hide facedots, except when in V3D_ZBUF_SELECT mode
`use_occluded_geometry`
- Different theme (wire_inactive) when not in edge selection mode

Manipulator: Skip redundant transform updates

Partially address T55458

Error in recent popover width

Added support for Freestyle edge mark.

UI: remove empty space at the end of headers, tweak start/end spacing.

Fix 3D view header panning not working with region overlap.

Seam and Material lines can be ena/disabled in dpix. Also added UI.

Fix pop-over buttons always getting space for icon

Merge branch 'master' into blender2.8

Cleanup: swapped X/Y UI_UNIT

Merge branch 'master' into blender2.8

Conflicts:
source/blender/blenkernel/intern/blendfile.c
source/blender/blenkernel/intern/node.c
source/blender/blenkernel/intern/particle.c

Cleanup: remove more G.main from BKE area.

UI: adjust view navigation layout

Button layout now matches T54723.

UI: Hack topbar to keep all running while found final design

These changes are only to keep running grease pencil with the last merge.

All these UI elements must be relocated to the right place, but if we don't show them in the UI while we get the final place, the grease pencil is unusable.

UI: HUD now follows region theming

Depsgraph: Avoid use of 0 tag flag on build finish

Use all the explicit tagging. Solves characters being in T-pose after
opening specific scene files.

Fix incorrect strand data offset due to added taper attributes.

UI: show HUD when region overlap is disabled