Estimate Sample Sizes endpoint seems to skip canonicalization step

[vteague]

During estimate sample sizes, the canonicalization step seems to be skipped.

Not clear whether this is a client issue or a server issue.

[vteague]

Notes to replicate:

I used resources/workflows/Boulder_loadCVRs.http and demo1_loadCVRs.http, then stepped through defining the audit via the client.

First note that if the manifests are uploaded (via Boulder_loadManifest.http and demo1_loadManifests.http), the canonicalization step is not skipped, because the demo1-canonical-list.csv demands standardized contest names for Boulder Mayoral, Boulder Council, Layafette Council and U-CO Regent in Adams and Alamosa.

[vteague]

Also Jorge Chavez's name needs to be canonicalized in Boulder Valley School District.

[vteague]

Canonicalization follows from the upload of the canonical list csv and precedes assertion generation, as it should.

[vteague]

Now repeating with only manifests.
The `Standardize Contest Names' step says "waiting for counties to upload contest data". The "Save & Next" button is disabled.

[vteague]

Update: I've got this working and put in a draft PR so people can easily see where it's up to:
#240
I'm pretty happy with the (very minor) changes to the colorado-rla endpoint, though I still need to add some basic tests.
However, the client changes are just a prototype, and it'd be good if @charliecarlton could take a look and possibly think about a better way to do it.