Multiple minor changes and fixes for fixing view and projection 3D transformations (UNFINISHED):
- Added two auxiliar constants Z_NEAR and Z_FAR to camera.cpp
- zNear and zFar values have been changed.
- Changed the origin and destination of world origin axis.
- Camera::setView() reimplemented using glm::lookAt() function.
- Camera::sendToShader() method now makes use of transformedEye attribute value.