Reorganize icon data as an embedded icon theme (#226)

glabels/main.cpp

@@ -32,6 +32,7 @@
 
 #include <QApplication>
 #include <QCommandLineParser>
+#include <QIcon>
 #include <QLibraryInfo>
 #include <QLocale>
 #include <QTranslator>
@@ -47,6 +48,8 @@ int main( int argc, char **argv )
 	QCoreApplication::setApplicationName( "glabels-qt" );
 	QCoreApplication::setApplicationVersion( glabels::model::Version::LONG_STRING );
 
+	QIcon::setThemeName( "glabels-flat" );
+
 	//
 	// Setup translators
 	//