Use a better notation for exporting JS components and functions

ui/src/playlist/PlaylistActions.js

@@ -16,7 +16,7 @@ import { playNext, addTracks, playTracks, shuffleTracks } from '../actions'
 import { M3U_MIME_TYPE, REST_URL } from '../consts'
 import subsonic from '../subsonic'
 import PropTypes from 'prop-types'
-import { formatBytes } from '../common/SizeField'
+import { formatBytes } from '../utils'
 import { useMediaQuery } from '@material-ui/core'
 import config from '../config'
 

ui/src/playlist/PlaylistList.js

@@ -11,8 +11,7 @@ import {
   useNotify,
 } from 'react-admin'
 import Switch from '@material-ui/core/Switch'
-import { DurationField, List } from '../common'
-import Writable, { isWritable } from '../common/Writable'
+import { DurationField, List, Writable, isWritable } from '../common'
 
 const PlaylistFilter = (props) => (
   <Filter {...props} variant={'outlined'}>