Minor function documentation changes. Requirements update for new Gradio and version of Gradio annotator that allows for saving preferred redaction format and to include box id

Implemented Textract document API calls and associated output tracking/download. Fixes to config and cost code implementation. General minor bug fixes.

Major update. General code revision. Improved config variables. Dataframe based review frame now includes text, items can be searched and excluded. Costs now estimated. Option for adding cost codes added. Option to extract text only.