Merge branch 'master' into 'master'

[transfer-engine] Store timestamps in proper ISO-8601 UTC. Contributes to JB#34413

::toString() with time pattern can use localized numbers, which
doesn't end up proper ISO-8601 format. Also as local time
the value was ambigous after timezone change.

See merge request !1

src/dbmanager.cpp

@@ -103,10 +103,8 @@ class DbManagerPrivate {
 
     QString currentDateTime()
     {
-        // TODO: Make sure this can handle time correctly
-        // Let's use ISO8601 strings
-        QDateTime dt = QDateTime::currentDateTime();
-        return dt.toString("yyyy-MM-ddThh:mm:ss");
+        QDateTime dt = QDateTime::currentDateTimeUtc();
+        return dt.toString(Qt::ISODate);
     }
 
     bool createDatabaseSchema()