Clean and transform article submission files into a consistent format

Install imagemagick-dev and ghostscript in order for wand Python module to open PDF files. Also, the imagemagick policy.xml file must be configured to allow reading of PDF files.

To use a YAML file of assessment terms in the asessment_terms.py module, set the constant ASSESSMENT_TERMS_YAML in the module to be the path to the YAML file on disk. The sample file assessment_terms.yaml in the code repository is not distributed as part of the library.

Licensed under MIT.