Add # of episodes sort option for podcast libraries

components/modals/OrderModal.vue

@@ -86,6 +86,10 @@ export default {
           text: this.$strings.LabelSize,
           value: 'size'
         },
+        {
+          text: this.$strings.LabelNumberOfEpisodes,
+          value: 'media.numTracks'
+        },
         {
           text: this.$strings.LabelFileBirthtime,
           value: 'birthtimeMs'

strings/en-us.json

@@ -196,6 +196,7 @@
   "LabelNotStarted": "Not Started",
   "LabelNumEpisodes": "{0} episodes",
   "LabelNumEpisodesIncomplete": "{0} episodes, {1} incomplete",
+  "LabelNumberOfEpisodes": "# of Episodes",
   "LabelOff": "Off",
   "LabelOn": "On",
   "LabelPassword": "Password",