Show/hide display popups with focus

Signed-off-by: Sean Davis <smd.seandavis@gmail.com>
Add hotplug checkbox to plug dialog

Signed-off-by: Sean Davis <smd.seandavis@gmail.com>
Identify Displays button

Signed-off-by: Sean Davis <smd.seandavis@gmail.com>
Fix display mirroring

Signed-off-by: Sean Davis <smd.seandavis@gmail.com>
Make mirror button insensitive if not possible

Signed-off-by: Sean Davis <smd.seandavis@gmail.com>
I18n: Update translation zh_TW (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation bg (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation it (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation en_AU (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation tr (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ko (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation fr (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation pl (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation sr (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation kk (100%).

354 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).