Some strings are untranlasted and seems to not be in the POT files.
Concerned strings are those are displayed when mouse is over some links: all
links in the "Navigation" menu and the first link of "Fedora Websites".
These strings are probably those its are in the "title" attribute of the html
This is a bug that is caused from the intltool pacakge, see:
Once it's fixed, an update is released, and the package maintainer pushes it to
our updates system, strings will be extracted correctly and become translatable.