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.

src/cli/Extract.cpp

@@ -84,7 +84,8 @@ int Extract::execute(const QStringList& arguments)
         if (fileKey->type() != FileKey::Hashed) {
             err << QObject::tr("WARNING: You are using a legacy key file format which may become\n"
                                "unsupported in the future.\n\n"
-                               "Please consider generating a new key file.") << endl;
+                               "Please consider generating a new key file.")
+                << endl;
         }
         // LCOV_EXCL_STOP