Makes a system call to rest_auth.pl, a Perl script modified from
    https://github.com/kjolley/BIGSdb/tree/develop/scripts/test
    And downloads the most up-to-date rMLST profile and alleles

def getrmlsthelper(referencefilepath, update, start):
    """
    Makes a system call to rest_auth.pl, a Perl script modified from
    https://github.com/kjolley/BIGSdb/tree/develop/scripts/test
    And downloads the most up-to-date rMLST profile and alleles
    """
    from subprocess import call
    analysistype = 'rMLST'
    # Folders are named based on the download date e.g 2016-04-26
    # Find all folders (with the trailing / in the glob search) and remove the trailing /
    lastfolder = sorted(glob('{}{}/*/'.format(referencefilepath, analysistype)))[-1].rstrip('/')
    # lastfolder = os.path.join(referencefilepath, analysistype)
    delta, foldersize, d1 = schemedate(lastfolder)
    # Extract the path of the current script from the full path + file name
    homepath = os.path.split(os.path.abspath(__file__))[0]
    # Set the path/name of the folder to contain the new alleles and profile
    newfolder = os.path.join(referencefilepath, analysistype, str(d1))
    # System call
    rmlstupdatecall = 'cd {} && perl {}/rest_auth.pl -a {}/secret.txt'.format(newfolder, homepath, homepath)
    if update:
        if delta.days > 7 or foldersize < 100:
            printtime("Last update of rMLST profile and alleles was {} days ago. Updating".format(str(delta.days)),
                      start)
            # Create the path
            make_path(newfolder)
            # Copy over the access token to be used in the authentication
            shutil.copyfile('{}/access_token'.format(homepath), '{}/access_token'.format(newfolder))
            # Run rest_auth.pl
            call(rmlstupdatecall, shell=True)
            # Get the new alleles into a list, and create the combinedAlleles file
            alleles = glob('{}/*.tfa'.format(newfolder))
            combinealleles(start, newfolder, alleles)
        # If the profile and alleles are up-to-date, set :newfolder to :lastfolder
        else:
            newfolder = lastfolder
        # Ensure that the profile/alleles updated successfully
        # Calculate the size of the folder by adding the sizes of all the files within the folder together
        newfoldersize = sum(os.path.getsize('{}/{}'.format(newfolder, f)) for f in os.listdir(newfolder)
                            if os.path.isfile('{}/{}'.format(newfolder, f)))
        # If the profile/allele failed, remove the folder, and use the most recent update
        if newfoldersize < 100:
            shutil.rmtree(newfolder)
            newfolder = sorted(glob('{}{}/*/'.format(referencefilepath, analysistype)))[-1].rstrip('/')
    # Don't update the profile/alleles if not requested
    else:
        newfolder = lastfolder
    # Return the system call and the folder containing the profile and alleles
    return rmlstupdatecall, newfolder