Log Message:
libxfce4ui: update to 4.13.5

Change log:

4.13.5
======
- Add PrintScreen as shortcut for xfce4-screenshooter (Bug #14524)
- Add Ctrl + Alt + t as default shortcut for terminal (Bug #14510)
- Add xfce_gdk_screen_get_geometry (a replacement for \ 
gdk_screen_width/gdk_screen_height)
- Remove useless glade_*dir variables from libxfce4ui-{1,2}.pc (Bug #13945)
- Fix release tarball by adding libxfce4ui-dialog-ui.ui
- Fixes for gladeui2 detection
- Install icons when gladeui2 is set (Bug #15207)
- Fix build error with --disable-gtk2 and having gladeui-1.0 installed
- Remove styling of emails in about dialog (Bug #14638)
- Fix compiler error -Wcast-function-type (GCC 8)
- Use https://docs.xfce.org for help url
- Fix compilation warnings ""defined" may not be portable"
- Update xfce4-about (core contributors, contributors, translators)
- Translation Updates: Amharic, Arabic, Asturian, Belarusian, Bulgarian, \ 
Bengali, Catalan, Czech, Danish, German, Greek, English (Australia), English \ 
(United Kingdom), Spanish, Basque, Finnish, French, Galician, Hebrew, Croatian, \ 
Hungarian, Indonesian, Icelandic, Italian, Japanese, Kazakh, Korean, Lithuanian, \ 
Latvian, Malay, Norwegian Bokmål, Dutch, Norwegian Nynorsk, Occitan (post \ 
1500), Polish, Portuguese, Portuguese (Brazil), Romanian, Russian, Slovak, \ 
Slovenian, Albanian, Serbian, Swedish, Telugu, Thai, Turkish, Uighur, Ukrainian, \ 
Urdu, Urdu (Pakistan), Chinese (China), Chinese (Hong Kong), Chinese (Taiwan)