update translations for plurals of release types

res/translations/en.json

@@ -48,6 +48,7 @@
     "Close to system tray": "Close to system tray",
     "Comment": "Comment",
     "Compilation": "Compilation",
+    "Compilations": "Compilations",
     "Composer": "Composer",
     "Configure your music server to add radio stations": "Configure your music server to add radio stations",
     "Confirm Delete Playlist": "Confirm Delete Playlist",
@@ -81,6 +82,7 @@
     "Enabled": "Enabled",
     "Enter": "Enter",
     "EP": "EP",
+    "EPs": "EPs",
     "Equalizer": "Equalizer",
     "Error": "Error",
     "Exclusive mode": "Exclusive mode",
@@ -199,6 +201,7 @@
     "Shuffle tracks": "Shuffle tracks",
     "Similar artists": "Similar artists",
     "Single": "Single",
+    "Singles": "Singles",
     "Size": "Size",
     "Skip duplicate tracks": "Skip duplicate tracks",
     "Skip SSL certificate verification": "Skip SSL certificate verification",