Python module to interact with galaxy

Use with

    from galaxy import export, load

Export is a function which takes a single filename and uploads to the current galaxy history.
Load *will* take a single integer and download that dataset from the galaxy history, returning
either a file handle, or something that can be used with a `with` statement, e.g.

    with load(44) as handle:
        # do something
Merge branch 'galaxy_python_module'
IPython default profile loads galaxy module

Reverted to the "default" profile as there's no sense in naming our profile specially. We can
actually probably remove the command from the startup file completely. The `ipython-profile.py` file
is loaded by default for every new IPython console.
Merge branch 'galaxy_python_module'

Tested working