Solving slowering.
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
temporary commit.
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
Fixed OpenCV Alignment.

Conflicts:
	g2o_frontend/pwn_core/pwn_static.cpp
Merge branch 'master' of https://github.com/grisetti/g2o_frontend

Conflicts:
	g2o_frontend/CMakeLists.txt
	g2o_frontend/pwn_core/pwn_static.cpp