Code review comment for lp:~attente/unity-settings-daemon/1226962

Simple test case:

- add Greek keyboard layout in unity-control-center Text Entry panel
- launch Inkscape
- switch to Greek using the keyboard indicator
- try some shortcuts
  - Ctrl+Shift+D (normally opens the Document Preferences dialog)
  - Ctrl+Shift+F (normally opens the Fill and Stroke panel)
  - Ctrl+Shift+A (normally opens the Align and Distribute panel)

The shortcuts don't work with the current version of unity-settings-daemon, this patch should fix it.