fix(plex): the show and season restart names its object and starts at 0 (E28 S3f2)

The header button said only "Play from start" and resumed the first
episode at its saved point. It now reads "Season from the start · S6 · E1"
or "Show from the start · S1 · E1" and asks the player for 0.

frontend/src/i18n/locales/en/plex.json

@@ -138,7 +138,8 @@
     "seasons": "Seasons",
     "backToShow": "Back to show",
     "episodeCount": "{{count}} episodes",
-    "playFromStart": "Play from start",
+    "showFromStart": "Show from the start",
+    "seasonFromStart": "Season from the start",
     "related": "Related shows",
     "markShowWatched": "Mark show watched",
     "markShowUnwatched": "Mark show unwatched",

frontend/src/i18n/locales/hu/plex.json

@@ -138,7 +138,8 @@
     "seasons": "Évadok",
     "backToShow": "Vissza a sorozathoz",
     "episodeCount": "{{count}} rész",
-    "playFromStart": "Lejátszás az elejéről",
+    "showFromStart": "Sorozat elejéről",
+    "seasonFromStart": "Évad elejéről",
     "related": "Kapcsolódó sorozatok",
     "markShowWatched": "Egész sorozat megnézve",
     "markShowUnwatched": "Sorozat jelölés visszavonása",