Fixed: Size on disk sorting and display

Closes #4014

frontend/src/Series/Details/SeriesDetails.js

@@ -426,7 +426,7 @@ class SeriesDetails extends Component {
 
                     <span className={styles.sizeOnDisk}>
                       {
-                        formatBytes(sizeOnDisk)
+                        formatBytes(sizeOnDisk || 0)
                       }
                     </span>
                   </Label>

frontend/src/Series/Index/Posters/SeriesIndexPoster.js

@@ -97,7 +97,8 @@ class SeriesIndexPoster extends Component {
       seasonCount,
       episodeCount,
       episodeFileCount,
-      totalEpisodeCount
+      totalEpisodeCount,
+      sizeOnDisk
     } = statistics;
 
     const {
@@ -226,6 +227,7 @@ class SeriesIndexPoster extends Component {
 
         <SeriesIndexPosterInfo
           seasonCount={seasonCount}
+          sizeOnDisk={sizeOnDisk}
           qualityProfile={qualityProfile}
           showQualityProfile={showQualityProfile}
           showRelativeDates={showRelativeDates}

frontend/src/Store/Actions/seriesActions.js

@@ -121,7 +121,9 @@ export const filterPredicates = {
 
   sizeOnDisk: function(item, filterValue, type) {
     const predicate = filterTypePredicates[type];
-    const sizeOnDisk = item.statistics ? item.statistics.sizeOnDisk : 0;
+    const sizeOnDisk = item.statistics && item.statistics.sizeOnDisk ?
+      item.statistics.sizeOnDisk :
+      0;
 
     return predicate(sizeOnDisk, filterValue);
   }
@@ -145,7 +147,7 @@ export const sortPredicates = {
   sizeOnDisk: function(item) {
     const { statistics = {} } = item;
 
-    return statistics.sizeOnDisk;
+    return statistics.sizeOnDisk || 0;
   }
 };