[Xfce-i18n] Some string changes for the xfwm4 settings dialogs

[Alexander Toresson]

Hello,

As of tonight, disambiguations for a few strings in the xfwm4 settings
dialogs were added for the "<i>Short</i>", "<i>Small</i>",
"<i>Large</i>" etc strings. This means that they require a
retranslation by you translators. Sorry for the inconvenience.
But at the same time, please check so your translations are
grammatically correct; this change was prompted by that the Swedish
translation couldn't be grammatically correct without it.

Regards, Alexander