4.8.2

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- Change packing order of buttons in pager to match wnck.
- Initialize tasklist viewport if screen is connected (bug #7255).
- Set some atk object names on panel buttons without label.
- Allow installation of the helpers in a custom location.
- Set a static role for the panels (bug #7094). Reverted the previous fix.
- Ask to start the panel if 'xfce4-panel -r' is called without instance.
- Respawn a child if the plugin was realized with a pid.
- Don't crash on a wrong colormap when changing screens.
- Don't activate windows in tasklist when dnd a button or plugin.
- Keep reference on window to avoid crash (bug #7193).
- Activate windows on button release events (bug #7296).
- Use the widget snapshot as tasklist draw icon.
- Fix test so manual is installed (bug #7274).
- Translation updates (he, sv, id, zh_CN, da, kk, pt, uk,
  zh_TW, ja, ru).