Integrate headless EI as parser of record

[Lego6245]

Dependent on #354

We should remove the old parser completely and replace it with EI running either in a micro-service or some other structure to enable us to use the parser instead of using the current one.

1. Remove the current option to upload logs to parse with our parser.
2. Set up EI to accept logs to parse.
3. Wire up the front and back ends to provide log files, verify their integrity, parse with EI, and then insert the json into the encounter store using #354.

Questions still remain if we should store the HTML output as well and make that accessible (probably)