Move OpenGLRender to vcl

Change-Id: I6383ae3f94fc18aec92596b9d857d3fde5869dd6
Introduce OpenGLContext in vclopengl

Move DummyChart::initOpengl() and
DummyChart::initWindow into this class.

Change-Id: If3c1bb52cb2819019f0dda626612a164709b17ac
Remove unused include

Change-Id: I029b43b29a7fba500cfe2c74e3e66274612f3524