WIP: Resolve "Fixing and improving QR manager"

Closes #295

include/core/ceres_wrapper/qr_manager.h

@@ -9,7 +9,7 @@
 #define SRC_CERES_WRAPPER_QR_MANAGER_H_
 
 #include "core/solver/solver_manager.h"
-#include "core/solver_suitesparse/sparse_utils.h"
+#include "core/ceres_wrapper/sparse_utils.h"
 
 namespace wolf
 {
@@ -36,7 +36,7 @@ class QRManager : public SolverManager
 
         virtual std::string solve(const unsigned int& _report_level);
 
-        virtual void computeCovariances(CovarianceBlocksToBeComputed _blocks = ROBOT_LANDMARKS);
+        virtual void computeCovariances(CovarianceBlocksToBeComputed _blocks = CovarianceBlocksToBeComputed::ROBOT_LANDMARKS);
 
         virtual void computeCovariances(const std::vector<StateBlockPtr>& _sb_list);