Restore 'e' to edit current document

Fixed up ? to open keyboard shortcuts

frontend/utils/routeHelpers.js

@@ -1,4 +1,5 @@
 // @flow
+import Document from 'models/Document';
 
 export function homeUrl(): string {
   return '/dashboard';
@@ -12,7 +13,15 @@ export function newCollectionUrl(): string {
   return '/collections/new';
 }
 
-export function searchUrl(query: string): string {
+export function documentUrl(doc: Document): string {
+  return doc.url;
+}
+
+export function documentEditUrl(doc: Document): string {
+  return `${doc.url}/edit`;
+}
+
+export function searchUrl(query?: string): string {
   if (query) return `/search/${query}`;
   return `/search`;
 }