Log Message:
Update to 2.3.4:

2.3.4
=====
- Bump GTK version to 3.18, remove deprecations
- Bug #12417: Display tooltip for indicators
- Make sure the "clear indicators" dialog works with libxfce4ui-4.13.x
- Fix IT_PROG_INTLTOOL warning
- Compilation fixes for xfconf-4.13
- Fixed bugs exposed by xfconf-4.13
- Add option to display indicators squared
- Fix wrong defaults for config
- Don't display horizontal scroll within treeview