Module livedesign_pldb_lib

Run initialize and check_status in task engine directory.
Need api_client.py and convert_pse.py; modify paths to these scripts
in this file as needed.

Include STATE_FILE and all files referenced by STATE_FILE
Example format of STATE_FILE:
    [
        {"input_files": {"receptor_pse": "2.pse", "ligand_pse": "1.pse"},
        "output_files": {"receptor_pse": "pldb_out_1_receptor_pse.pse",
                       "ligand_pse": "pldb_out_1_ligand_pse.pse"}
        "complex": {"complex_id": 20,
                  "status": [finished|failed|running],
                  "structure_uri": "/api/v1/structures/1"}},

        {"input_files": {"receptor_pse": "2.pse", "ligand_pse": "3.pse"},
        "output_files": {"receptor_pse": "pldb_out_2_receptor_pse.pse",
                       "ligand_pse": "pldb_out_2_ligand_pse.pse"}
        "complex": {"complex_id": 5,
                  "status": [finished|failed|running],
                  "structure_uri": '/api/v1/structures/2'}}
    ]