Report Engine:

changed onSave() -> onSave(bool&)
rename 'loaded' signal to 'loadFinshed' to be consistent with 'saveFinished' signal
added signal 'onSaveAs' and corresponding
added functions:  'emitSaveReportAs', 'emitLoadFinished'

DesignWidget:
add boolean functions checking whether emitSaveReport and emitSaveReportAs completed.

DesignWindow:
save / saveas / load functions are interceptable by reportengine signals

limereport/lrreportdesignwidget.h

@@ -108,6 +108,8 @@ public:
     ReportEnginePrivateInterface* report(){return m_report;}
     QString reportFileName();
     bool isNeedToSave();
+    bool emitSaveReport();
+    bool emitSaveReportAs();
     bool emitLoadReport();
     void saveState(QSettings *settings);
     void loadState(QSettings *settings);