I18n: Add new translation zh_HK (100%).

215 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
Update man page
Add xfconf property for add/remove workspace (Bug 4278, 7337)

An xfconf property /windowlist-menu/show-add-remove-workspaces
was added to allow the removal of the Add/Remove workspace buttons
on the windowlist menu. This will allow administrators to remove
those options when locking down xfconf properties for kiosk setups.
Also this patch updates the README.xfconf file with all the recent
xfconf property changes. It also revises the README.kiosk file
since xfdesktop relies on xfconf to lock properties rather than
the kioskrc file.
Remove old GLIB/GTK macro checks

Remove old GLIB/GTK workarounds that were needed in the past. Also
GSEAL a context action and switch from GtkObject to GtkWidget as
GtkObject will be gone in the future.
Move max-template-files xfconf property

Put the max-template-files xfconf property under the desktop-menu
where it belongs.
Add a settings option for the add/remove workspace property
I18n: Update translation bg (100%).

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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

216 translated messages.

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