[Xfce-i18n] [new-strings] Preparing Ristretto 0.3.6 release

[Stephan Arts]

Hi,

I am preparing to release Ristretto 0.3.6 at the end of the month.

The following issues have been fixed in it.

- Clear tooltip if image is closed
- Provide mime-type when loading image, gdkpixbufloader makes mistakes
  guessing it.
- Keep a list of file-monitors for each file when a selection of files
  is opened.
- Make a difference between delete from disk and send to trash.

Fixing the last item introduced a new translatable string.

If you want to complete the translation for 0.3.6, I ask you kindly to
update it before March 31st.

Kind regards,

Stephan Arts