logic: file associations for Mac and opening project files via Mac OS

* hide start screen when opening with project file
* added project icon file to bundle and file type association to plist
* listen for file open events from double click or drag and drop
* fixed crashes in window handling

src/app/main.cpp

@@ -1,25 +1,22 @@
-#include <memory>
-
-#include <QApplication>
-
+#include "utility/AppPath.h"
 #include "utility/logging/ConsoleLogger.h"
 #include "utility/logging/FileLogger.h"
 #include "utility/logging/LogManager.h"
+#include "utility/ResourcePaths.h"
 #include "utility/Version.h"
 
 #include "Application.h"
 #include "includes.h" // defines 'void setup(int argc, char *argv[])'
 #include "LicenseChecker.h"
 #include "qt/commandline/QtCommandLineParser.h"
-#include "qt/window/QtMainWindow.h"
-#include "qt/window/QtSplashScreen.h"
 #include "qt/network/QtNetworkFactory.h"
+#include "qt/QtApplication.h"
 #include "qt/utility/utilityQt.h"
 #include "qt/view/QtViewFactory.h"
+#include "qt/window/QtMainWindow.h"
+#include "qt/window/QtSplashScreen.h"
 #include "version.h"
 
-#include "utility/AppPath.h"
-#include "utility/ResourcePaths.h"
 
 void init()
 {
@@ -40,14 +37,10 @@ int main(int argc, char *argv[])
 	Version version = Version::fromString(GIT_VERSION_NUMBER);
 
 	setup(argc, argv);
-	QApplication qtApp(argc, argv);
+	QtApplication qtApp(argc, argv);
 	QApplication::setApplicationName("Coati");
 	QApplication::setApplicationVersion(version.toDisplayString().c_str());
 
-	QtCommandLineParser commandLineParser;
-	commandLineParser.setup();
-	commandLineParser.process(qtApp);
-
 	qtApp.setAttribute(Qt::AA_UseHighDpiPixmaps);
 
 	QPixmap whitePixmap(500, 500);
@@ -60,6 +53,10 @@ int main(int argc, char *argv[])
 
 	init();
 
+	QtCommandLineParser commandLineParser;
+	commandLineParser.setup();
+	commandLineParser.process(qtApp);
+
 	QtViewFactory viewFactory;
 	QtNetworkFactory networkFactory;