Per @ajonsson, gettext does not like < or > used as symbols
and throws a warning. They are replaced with HTML entities
< and > to prevent the problem.
GIMP expects CSS palettes to end with a ";" when importing. However,
GIMP exports CSS lines without ";". This means GIMP can't reopen its
own exported CSS palettes.
The ";" was removed from the regex since CSS2 does not require
the last line to end with a ";". However, CSS3 and above
require ending all lines with a ";", so it is added to the
export script.
Add a palette export script which allows exporting palettes to .css,
.php, .py, .txt and .java by adding a Export to menu item in the
palette context menu in the Palettes dockable.
