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/TestCli.h

@@ -21,11 +21,11 @@
 #include "core/Database.h"
 #include "util/TemporaryFile.h"
 
-#include <QTest>
-#include <QTextStream>
 #include <QFile>
 #include <QScopedPointer>
 #include <QTemporaryFile>
+#include <QTest>
+#include <QTextStream>
 
 class TestCli : public QObject
 {
@@ -70,4 +70,4 @@ private:
     FILE* m_stdinHandle = stdin;
 };
 
-#endif //KEEPASSXC_TESTCLI_H
+#endif // KEEPASSXC_TESTCLI_H