Applying tanderson's patch to replace invertY with (1,-1) scaling of SVG itself.  Commented out invertY as no longer used.
Rewrite of OrthoViews.  Detect page size and titleblock from tags in SVG template.  Separation of logic from GUI.  Much improved logic.  No longer uses python to manipulate views - calls C++ methods directly.  Can now support more views, and axonometric views in any position.
Fix for Windows
Merge branch 'refs/heads/j-downsett-orthos_finished'

Conflicts:
	src/Mod/Drawing/Gui/TaskOrthoViews.cpp
fix some warnings