[WIP] New ebi submit [WIP]

Almost there, but I thought I'd get this in now so that people can begin reviewing, it's kind of big.

Needs:
- [ ] Logging
- [ ] Test code
- [ ] Script file (this is the library code)
- [ ] Final step that calls ASCP on the XML files generated
is this `empty_value` the same as the one passed in in the constructor? if so, should it just be a member variable?