画像を別の規格に移す --> 画像を別の形式に変換する

'used as an image format converter'
src/: Remove some standalone script-fu categories
src/: Ensure showing expanded ulink

Added hack to make the same message appear on nav bar and on a sentence.
https://mail.gnome.org/archives/gimp-docs-list/2013-November/msg00010.html