Updated POTFILES.in
Updated Czech translation
Updated Spanish translation
Updated Slovenian translation
Updated slovak translation
Show text in tooltip when label is ellipsized

This is the case for the long texts in the "Typing" section.

https://bugzilla.gnome.org/show_bug.cgi?id=704149
Make window resizable for long option labels

The "Typing" section has long labels (depending on the language), so
make the window resizable to be able to see the full text.

https://bugzilla.gnome.org/show_bug.cgi?id=704149
Drop gconf support

https://bugzilla.gnome.org/show_bug.cgi?id=704202