[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:

  f4c66c7... theme: Stylesheet papercuts and other visual fixes

Commits added to the branch:

  adc58ea... shell: Refactor internal calls to systemd service (*)
  352c969... shell: Add call to check the existence of a systemd unit (*)
  c12f085... ibusManager: Check existence of IBus systemd units before m (*)
  6fec826... theme: Stylesheet papercuts and other visual fixes

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