Ebi submit page

_Mostly_ there. This is not linked up yet, so you have to go to the page manually (e.g., `localhost:8888/ebi_submission/1`. Second, `send` is forced to `False` right now so it is not sending. The actual submission is done on a worker, and allows for a somewhat general way to submit arbitrary compute with a waiting page.

It is awkward to push and publish messages, and I think there is a better way, but this works as far as I can tell.
When I asked Gail about the format of the templates, she told me that they always start with the first column `sample_name` (no leading # character), so that's what I wrote the code to expect