Only allows adding to a writable playlist

ui/src/playlist/PlaylistList.js

@@ -10,7 +10,7 @@ import {
   TextField,
 } from 'react-admin'
 import { DurationField, List } from '../common'
-import Writable, { isWritable } from './Writable'
+import Writable, { isWritable } from '../common/Writable'
 
 const PlaylistFilter = (props) => (
   <Filter {...props}>

ui/src/playlist/PlaylistShow.js

@@ -6,7 +6,7 @@ import { Title } from '../common'
 import PlaylistSongs from './PlaylistSongs'
 import PlaylistActions from './PlaylistActions'
 import PlaylistSongBulkActions from './PlaylistSongBulkActions'
-import { isReadOnly } from './Writable'
+import { isReadOnly } from '../common/Writable'
 
 const PlaylistShow = (props) => {
   const viewVersion = useSelector((s) => s.admin.ui && s.admin.ui.viewVersion)

ui/src/playlist/Writable.js

@@ -1,22 +0,0 @@
-import { cloneElement } from 'react'
-
-export const isWritable = (owner) => {
-  return (
-    localStorage.getItem('username') === owner ||
-    localStorage.getItem('role') === 'admin'
-  )
-}
-
-export const isReadOnly = (owner) => {
-  return !isWritable(owner)
-}
-
-const Writable = (props) => {
-  const { record, children } = props
-  if (isWritable(record.owner)) {
-    return cloneElement(children, props)
-  }
-  return null
-}
-
-export default Writable