File entry added to epiphany/po/POTFILES.in

[Christian Rose <menthos gnome org>]

"intltool-update --maintain" reported that there was a file missing from
po/POTFILES.* in epiphany:

===
The following files contain translations and are currently not in use. Please
consider adding these to the POTFILES.in file, located in the po/ directory.

src/ephy-tabs-menu.c

If some of these files are left out on purpose then please add them to
POTFILES.skip instead of POTFILES.in. A file 'missing' containing this list
of left out files has been written in the current directory.
===

I've added it to po/POTFILES.in now to fix this problem.


Christian