missing signatures in docs

[Thomas Gilgenast]

some signatures are missing for some functions in the compiled docs

specifically, all decorated functions seem to be affected

this seems to be a known issue in Sphinx, e.g. http://stackoverflow.com/questions/3687046/python-sphinx-autodoc-and-decorated-members

this could potentially be fixed by manually listing decorated functions with their correct signature in the module docs in the form

.. automodule:: django_app.tasks
    :members:
    :undoc-members:
    :show-inheritance:
    :exclude-members: funct1

    .. autofunction:: funct1(user_id)

[Thomas Gilgenast]

major doc update

fixed #2 (missing signatures in docs for decorated functions)

finished tutorials, including images

changed imputation_size default to 0 for balancing convenience functions

→ <<cset 6dbc612c998f>>