|BUILD CONFIGURATION|
[GunslingerEd.pro]
* Added the OpenGLWindow header and source

|SOURCE|
[MainWindow]
* Added an OpenGLWindow instance which is created as a widget within the window
[OpenGLWindow]
* This class is intended to act as the main 3D renderer for the editor, which
  will render into up to four render renderbuffers to display the different
  views of the world being edited
* An OpenGL context is created and rendered to
* The window displays the colour red and does nothing more at the moment