Document Odyssey CaseDetailParser usage

[zstumgoren]

We should expand our documentation to include:

• [ ] Create a new page for Data Extraction
• [ ] On the Data Extraction page high-level background on the fact that parsing is largely left as an end-user activity at the moment, except in the case of Odyssey platform
• [ ] Document Odyssey CaseDetailParser.data #162
• [ ] Document Odyssey CaseDetailParser's "power user" feature, which allows a user to dynamically call any attribute on the parser and map to certain page elements that are in Title Case. Users may require this feature in scenarios where (1) page elements are not named identically to our expectations (e.g. Judge instead of Judicial Officer) or (2) page elements are simply missing ('e.g. Judicial Officer is not on the page).

[justinmayo]

Starting to built documentation here: https://docs.google.com/document/d/1H9jAcPQhbK4nrFg7nDJFb549Xxa291KjCMah6ieOhl4/edit?usp=sharing