(fix) movement direction
(add) loockAt -need test
Merge branch 'master' of github.com:imhatep/earth

Conflicts:
	proj/qt/earth.pro.user
	src/glwidget.cpp
	src/mathUtils/iframe.cpp
	src/mathUtils/mathUtils.cpp
(fix) lookAt error
(add) global frame
(add) polarix shine
(add) locations system