Sphinx, copy images to source dir

doc/build/io/io.html

doc/build/modindex.html

doc/build/mol/base/editors.html

doc/build/mol/base/entity.html

doc/build/mol/base/mol.html

doc/build/mol/base/query.html

doc/build/newmodule.html

doc/build/objects.inv

doc/build/py-modindex.html

doc/build/search.html

doc/build/searchindex.js

doc/build/seq/base/seq.html

doc/make.py

doc/source/base/base.rst

doc/source/base/generic.rst

doc/source/conop/conop.rst

doc/source/external.rst

doc/source/geom/composite.rst

doc/source/geom/geom.rst

doc/source/geom/mat.rst