Added constraints editing to DatabaseViewer to add/reject loop closures, refine loop closures with ICP, detect more loop closures using the optimized map

Added Feature2D::parseParameters()
 

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1632 f169173b-cf89-36c8-b27e-44dbe73f0c83

tools/DatabaseViewer/main.cpp

@@ -27,7 +27,7 @@ int main(int argc, char * argv[])
 	ULogger::setLevel(ULogger::kInfo);
 
 	QApplication * app = new QApplication(argc, argv);
-	DatabaseViewer * mainWindow = new DatabaseViewer();
+	rtabmap::DatabaseViewer * mainWindow = new rtabmap::DatabaseViewer();
 
 	mainWindow->showNormal();