NOISSUE hotloading of translations and use of local PO files

The hotloading is still inefficient

api/logic/translations/POTranslator.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <QTranslator>
+
+struct POTranslatorPrivate;
+
+class POTranslator : public QTranslator
+{
+    Q_OBJECT
+public:
+    explicit POTranslator(const QString& filename, QObject * parent = nullptr);
+    QString translate(const char * context, const char * sourceText, const char * disambiguation, int n) const override;
+    bool isEmpty() const override;
+private:
+    POTranslatorPrivate * d;
+};