[gnome-shell] (4 commits) Non-fast-forward update to branch wip/snwh/more-papercut-fixes

[Sam Hewitt <snwh src gnome org>]

The branch 'wip/snwh/more-papercut-fixes' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  20d3324... theme: Stylesheet papercuts and other visual fixes

Commits added to the branch:

  907377e... screenshot-ui: Split out captureScreenshot() (*)
  b2fd93f... screenshot: Make captureScreenshot async (*)
  84cfab2... windowMenu: Add an entry to take a screenshot (*)
  22ffa37... theme: Stylesheet papercuts and other visual fixes

(*) This commit already existed in another branch; no separate mail sent