Fix sensitivity not always being applied.

Fixes invisible cursor in long editor lines

Fixes mousewheel zoom in case of inline diff view

make menu item order explicit with 'order' property (default to 0)
make group order be the natural string order with exceptions for 'navigation' (always first) and falsy groups (always last)

Folding icon collides with git decorations: Create a div per linedecoration

This reverts commit eae1a2f1.

reparent editor container for #8579

Fix debounceEvent

Several CJK strings on the UI are very difficult to read on standard definition monitors due to font weight and size (fixes #8653)

fixes #8265