Added simple viewer preferences section with grid dimensions.
Added simple viewer preferences section with grid dimensions.

hradec/gaffer,boberfly/gaffer,lucienfostier/gaffer,hradec/gaffer,boberfly/gaffer,ivanimanishi/gaffer,hradec/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,cedriclaunay/gaffer,lucienfostier/gaffer,chippey/gaffer,goddardl/gaffer,boberfly/gaffer,ivanimanishi/gaffer,cedriclaunay/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,chippey/gaffer,GafferHQ/gaffer,hradec/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,goddardl/gaffer,appleseedhq/gaffer,cedriclaunay/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,chippey/gaffer,GafferHQ/gaffer,boberfly/gaffer,goddardl/gaffer,cedriclaunay/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,goddardl/gaffer,chippey/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,ivanimanishi/gaffer,hradec/gaffer