WIP - Global UI (#785)

* update top bar and collections sidebar UI

* update collection entries UI

* improve global layout

* merge search page into collection page

* enable new entry button

* search fixup

* wip -initial editor update

* update editor scrolling and markdown toolbar position

* wip

* editor toolbar progress

* editor toolbar wip

* finished basic editor toolbar

* add standalone toggle component

* improve markdown toolbar spacing

* add user avatar placeholder

* finish markdown toggle styling

* refactor icon setup, add new icons

* add new icons to markdown editor toolbar

* remove extra app container

* add markdown active mark style

* relation and text widget styling

* widget design updates, basic list/object design update

* widget style updates, image widget improvements

* refactor widget directory, fix file removal

* widget focus styles

* finish editor widget focus styles

* migrate media library modal to react-modal

* wip - migrate editor component form to modal

* wip - move editor component form to modal

* wip - embed plugin forms in the editor

* inline shortcode forms working

* disable react hot loading, its breaking things

* improve shortcode form styles

* make shortcode form collapsible, improve styling

* add close functionality to shortcode blocks

* improve base media library styling

* fix shortcode label

* migrate unstyled workflow to new UI

* wip - reorganizing everything

* more work moving everything

* finish more moving and eliminating stuff

* restructure, remove react-toolbox

* wip - removing old stuff, more restructure

* finish restructure

* wip - css arch

* switch back to test repo

* update react-datetime to ^2.11.0

* remove leftover react-toolbox button

* more restructuring clean-up

* fix UI component directory case

* wip -css editor control style

* wip - consolidate widget styles

* wip - use a single control renderer

* fixed object values breaking

* wip - editor control active styles

* pass control wrapper to widgets

* ensure branch name is trimmed

* wip - improve widget authoring support

* import Map to Widget component

* refactor toolbar buttons

* wip - more widget active styles

* break out editor toggle component

* add local scroll sync back

* update editor toggle icons

* limit editor control pane content width

* fix editor control spacing

* migrate markdown toolbar stickiness to css

* fix markdown toolbar border radius

* temporarily use test backend

* stop markdown toolbar from going to bottom

* restore disabled markdown toolbar buttons for raw

* test markdown widget without focus styles

* more widget updates

* remove card visuals from editor

* disable dragging editor split off screen

* use editorControl component for shortcode fields

* make header site link configurable

* add configurable collection descriptions

* temporarily add example assets

* add basic list view

* remove outdated css mixins

* add and implement search icon

* activate quick add menu

* visualize usable space in editor view

* fix entry close, other improvements

* wip - editorial workflow updates

* some dropshadow and other CSS tweaks

* workflow ui updates

* add worfklow card buttons

* fix workflow card button handlers

* some dropshadow and other CSS tweaks

* make workflow board wider

* center workflow and collection views

* add basic responsiveness

* a bunch of fun UI fixes! a BUNCH! (#875)

* give `.nc-entryEditor-toolbar-mainSection` left and right child divs

* a bunch of fun UI fixes! a BUNCH!

* remove obscure --buttonShadow

* revert to test repo

* fix not found page styling

* allow workflow publishing from any column

* disallow publishing from all columns, with feedback

* fix new entry button

* fix markdown state persisting across entries

* enable simple workflow save and new from editor

* update slug in address bar when saving new entry

* wip - workflow updates, deletion working

* add status change functionality to editor

* wip - improving status change from editor

* editor toolbar back button improvements, loading improvements, cleanup

* progress on the media library UI cleanup

* remove font smothing css

* a quick fix for these buttons

* tweaks

* progress on media library modal— broken FYI

* fix media library functionality, finish migrating footer

* remove media library footer files

* remove leftover css import

* fix media library

* editor publishing functionality complete (unstyled)

* remove leftover loader var from media library

* wip - editor publishing styles

* add status dropdown styling

* editor toolbar style updates

* editor toolbar state improvements

* progress on the media library UI cleanup, style improvements

* finish editorial workflow editor styling

* finish media library styling

* fix config

* add what-input to optimize focus styling

* fix button

* fix navigation blocking for simple workflow

* improve simple workflow publishing

* add avatar dropdown to editor top bar

* style github and test-repo auth pages

* add git gateway auth page styles

* improve editor error styling

src/backends/backend.js

@@ -1,12 +1,19 @@
 import { attempt, isError } from 'lodash';
+import { resolveFormat } from "Formats/formats";
+import { selectIntegration } from 'Reducers/integrations';
+import {
+  selectListMethod,
+  selectEntrySlug,
+  selectEntryPath,
+  selectAllowNewEntries,
+  selectAllowDeletion,
+  selectFolderEntryExtension
+} from "Reducers/collections";
+import { createEntry } from "ValueObjects/Entry";
+import { sanitizeSlug } from "Lib/urlHelper";
 import TestRepoBackend from "./test-repo/implementation";
 import GitHubBackend from "./github/implementation";
 import GitGatewayBackend from "./git-gateway/implementation";
-import { resolveFormat } from "../formats/formats";
-import { selectIntegration } from '../reducers/integrations';
-import { selectListMethod, selectEntrySlug, selectEntryPath, selectAllowNewEntries, selectAllowDeletion, selectFolderEntryExtension } from "../reducers/collections";
-import { createEntry } from "../valueObjects/Entry";
-import { sanitizeSlug } from "../lib/urlHelper";
 
 class LocalStorageAuthStore {
   storageKey = "netlify-cms-user";
@@ -252,10 +259,10 @@ class Backend {
      */
     const hasAssetStore = integrations && !!selectIntegration(integrations, null, 'assetStore');
     const updatedOptions = { ...options, hasAssetStore };
+    const opts = { newEntry, parsedData, commitMessage, collectionName, mode, ...updatedOptions };
 
-    return this.implementation.persistEntry(entryObj, MediaFiles, {
-      newEntry, parsedData, commitMessage, collectionName, mode, ...updatedOptions,
-    });
+    return this.implementation.persistEntry(entryObj, MediaFiles, opts)
+      .then(() => entryObj.slug);
   }
 
   persistMedia(file) {