Blender Git Loki

Fix T75973: don't show raw Python errors to users for invalid shortcut paths

There are cases when a user can accidentally assign an operator to toggle an
invalid property to e.g. left click, which shows Python errors to the users.
Rather than throw an error and e.g. break 3D viewport selection for the user,
just print an error to the console.

The root cause of such bugs should be fixed as well, but a working Blender
is most important here.

BLI: add Map.is_empty() method

Depsgraph: Use BLI::Map for RNANodeQuery.id_data_map_

Reviewers: sergey

Differential Revision: https://developer.blender.org/D7512

UI: Title case for 'Prefetch Frames' in VSE

Cleanup: trailing whitespace

Merge branch 'blender-v2.83-release'

Fix select linked in pose mode

Only one of child bones would be selected when the bone under the
cursor had multiple children.

Merge branch 'blender-v2.83-release'

Fix T75993: Mark Seam from UV editor operates on unselected faces

Merge branch 'blender-v2.83-release'

Fix T76098: Dragging text selection with offset resets select start

Merge branch 'blender-v2.83-release'

Fix T76152: Shortcut underline under wrong letter

Use glyph bounds to calculate a better underline position.

BLF: add utility function to loop over glyph bounds

Cleanup: unused variable

Merge branch 'blender-v2.83-release'

Fix T75736 Viewport update problem when switching between view layers

The problem comes from the fact by no data being modified when switching
viewlayers.

To follow what the external render engines do, we completely reset the
viewport by freeing the GPUViewport to avoid any cached data from being
kept.

Fix T75910 Overlay: Face Orientation not working for "In Front" objects

Merge remote-tracking branch 'origin/blender-v2.83-release'

cleanup: Remove unused variable