fix translation path at runtime

Index: Pdf4QtLibCore/sources/pdfapplicationtranslator.cpp
--- Pdf4QtLibCore/sources/pdfapplicationtranslator.cpp.orig
+++ Pdf4QtLibCore/sources/pdfapplicationtranslator.cpp
@@ -48,7 +48,7 @@ PDFApplicationTranslator::ELanguage PDFApplicationTran
 void PDFApplicationTranslator::installTranslator()
 {
     QDir applicationDirectory(QCoreApplication::applicationDirPath());
-    applicationDirectory.cd("translations");
+    applicationDirectory.cd("../share/pdf4qt/translations");
     QString translationPath = applicationDirectory.absolutePath();
 
     Q_ASSERT(!m_translator);
