1.0dev: Added `dgettext` and `dngettext` in babel.js and fixed `gettext` cannot transrate messages for Trac.
1.0dev: Added `dgettext` and `dngettext` in babel.js and fixed `gettext` cannot transrate messages for Trac.

Closes #10749.

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac