Restore correct formatting

Many lines were not conformant with the project's formatting rules.
This patch should fix all formatting and whitespace issues in the code
base.
A clang-format directive was put around the connect() calls containing
SIGNALs and SLOTs whose signatures would be denormalized because of the
formatting rules.

tests/mock/MockChallengeResponseKey.cpp

@@ -13,7 +13,7 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
+ */
 
 #include "MockChallengeResponseKey.h"