[nautilus] (19 commits) Non-fast-forward update to branch wip/corey/fix-sort

[António Fernandes <antoniof src gnome org>]

The branch 'wip/corey/fix-sort' 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:

  c5a86f6... general: Stop leaking NautilusViewItem
  719cfda... list-view: Stop adding NameCell child twice
  87e2a9a... files-view: Drop .compare_files() vfunc
  9e284fb... vfs-file: Handle setting metadata with a NULL list
  80a1e0d... column-chooser: Don't allow "name" column to be hidden
  eddec3b... list-base: Make sort constants match attribute names
  aea3776... list-view: Block using the correct sorter
  3e07232... list-view: Keep track of the most recently sorted column
  3fe1e30... list-view: Only insert columns when they should be visible
  f85366b... list-view: Set model sorter to NULL on dispose

Commits added to the branch:

  19c1c54... Update Slovak translation (*)
  5b3bb86... Update Slovak translation (*)
  349f86e... application: Add shortcut for Preferences (*)
  f7b06ed... Update Georgian translation (*)
  992ff62... Update Chinese (China) translation (*)
  9fdb618... Update Ukrainian translation (*)
  5cb0b96... nautilus-file: Fix clang build errors (*)
  aeab1af... Update Russian translation (*)
  e5aa8b5... Update Portuguese translation (*)
  bd2214e... general: Stop leaking NautilusViewItem
  62d3758... list-view: Stop adding NameCell child twice
  a2f20d1... files-view: Drop .compare_files() vfunc
  6c1c437... vfs-file: Handle setting metadata with a NULL list
  c7bc615... column-chooser: Don't allow "name" column to be hidden
  6d67376... list-base: Make sort constants match attribute names
  3dfac31... list-view: Block using the correct sorter
  c72e6de... list-view: Keep track of the most recently sorted column
  edc2d4b... list-view: Only insert columns when they should be visible
  a81aeac... list-view: Set model sorter to NULL on dispose

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