Added functionality for axonometric views in orthogrpahic projection tool
Fix to axonometric projection for objects not centred at y = 0
Fixed overwriting of axo view when ortho views changed.
Correctly enables/disables axonometric tab when axonometric view added/removed.
Correctly identify standard template files
Added manual scaling to axonometric view
Merge branch 'refs/heads/j-downsett-drawing'