experimental re-embedding (#1186)

* first cut at re-embedding route and back-end support

* update and expand config route tests

* add scanpy_umap

* add reembedding to config route parameters

* front-end support for reembedding fetch and UI

* remove unused imports

* add loading state

* save reembedding in reducer state

* improve withColsFrom

* transmit reembed schema to client; pick unique embedding names

* display embeddings

* format

* lint

* spaces, tab size 2

* lint

* test hack for smoke-test race

* back out hack sleep

* add check for backed mode

* add unit test for reembedding

* lint

* hide re-embedding CLI param from help

client/src/actions/index.js

@@ -7,6 +7,7 @@ import {
   doBinaryRequest,
   dispatchNetworkErrorMessageToUser
 } from "../util/actionHelpers";
+import { requestReembed, reembedResetWorldToUniverse } from "./reembed";
 
 /*
 return promise to fetch the OBS annotations we need to load.  Omit anything
@@ -387,6 +388,7 @@ const requestDifferentialExpression = (set1, set2, num_genes = 10) => async (
 
 const resetWorldToUniverse = () => (dispatch, getState) => {
   const { universe } = getState();
+  reembedResetWorldToUniverse(dispatch, getState);
   dispatch({
     type: "reset World to eq Universe",
     universe
@@ -451,7 +453,8 @@ export default {
   requestDifferentialExpression,
   requestSingleGeneExpressionCountsForColoringPOST,
   requestUserDefinedGene,
+  requestReembed,
   resetWorldToUniverse,
   saveObsAnnotations,
-  setWorldToSelection,
+  setWorldToSelection
 };