Update wip/newsbeuter to 2.8 because 2.6 didn't build anymore.
This was due to an incompatibility with the latest version of textproc/json-c.

New dependency: devel/gettext-lib.

Changes since 2.6:

2.8 (2014-01-19):
        Add bookmark script for getpocket.com support (Andreas Happe).
	Fix issues with the build process on OpenBSD (Kyle Isom).
	Make guid generation smarter (Jochen Sprickerhof).
	In the feed list, quitting now is the same as clearing the tag in case a tag is selected.
	Add support for The Old Reader (theoldreader.com).
	Add support for NewsBlur (Thomas Weißschuh).
	Fix crash bug in filter expression parsing.
	Update French translation (Sabrina Dubroca).
	Fix crash bug with unbalanced <ol> tags (Richard Quirk).

2.7 (2013-08-27):
	Fix crash bug.
	Add option to colorize unread messages (Patrick Steinhardt).
	Add option to swap title and hints bar (Patrick Steinhardt).
	Add %u and %t support to itemview (Giuliano Schneider).
	Only force redraw if a form action is active (Patrick Steinhardt).
	update to stable version