Merge remote-tracking branch 'upstream/master'

* upstream/master: (199 commits)
  update node-debug
  [snippets] avoid incomplete proposals
  [css/less/sass] improved word rules
  [monaco] incomplete completion list not working
  fix #8917
  better handling of error case, #8917
  Fix NPE in InlineViewZonesComputer when a diff editor is opened and zooming with mouse wheel zoom
  be a little more explicit about 'navigation' group, #9153
  [CSS] Current color indicator freezes on old color, fixes  #9132
  Use variable name hoverMessage instead of htmlMessage
  Fixes #9283: Regression: No longer able to see source preview in Ctrl+hover
  Update c/c++ grammar (May27)
  bring back editor actions for #7666
  group actions => editor actions
  menu item order, group order, #9153
  prevent bad cursor on scrollbar in tabs container
  fix activity action showing blue feedback on mouse click when showing badge
  'revealIfOpened' flag should start at active editor (fixes #9265)
  check on activeActions, fixes #8995
  mirror 'source' when cursor changes, #8093
  ...