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/TestTools.cpp

@@ -28,7 +28,7 @@ namespace
     {
         return wholes + QLocale().decimalPoint() + fractions + " " + unit;
     }
-}
+} // namespace
 
 void TestTools::testHumanReadableFileSize()
 {