swap vector multiplication order, also some style changes

io_export_pc2.py

io_export_unreal_psk_psa.py

io_import_images_as_planes.py

io_mesh_raw/export_raw.py

io_scene_map/export_map.py

io_shape_mdd/export_mdd.py

light_field_tools/light_field_tools.py

mesh_bsurfaces.py

mesh_looptools.py

object_add_chain.py

object_fracture/fracture_ops.py

object_grease_scatter.py

render_povray/render.py

space_view3d_math_vis/draw.py

space_view3d_panel_measure.py

space_view3d_spacebar_menu.py