Second release candidate dt1.0~rc2

Our second release candidate is out! We have had a couple of tiny bugfixes, better translations, new rawspeed (brings support for the new Canon 5D Mark3), and slight consistency fixes in the GUI since rc1. You can get the tarball from here: https://sourceforge.net/projects/darktable/files/darktable/1.0/darktable-1.0~rc2.tar.gz/download Getting closer!