Turn page while playing (#1383) fixes #1365

* Add an EReader setting for turning when playing

This allows to allow the navigation with the Volume buttons even when
audiobooks are playing.

---------

Co-authored-by: advplyr <advplyr@protonmail.com>

strings/sl.json

@@ -179,8 +179,6 @@
   "LabelNarrator": "Bralec",
   "LabelNarrators": "Bralci",
   "LabelNavigateWithVolume": "Krmarite s tipkami za glasnost",
-  "LabelNavigateWithVolumeDisabled": "Izključeno",
-  "LabelNavigateWithVolumeEnabled": "Vključeno",
   "LabelNavigateWithVolumeMirrored": "Zrcalno",
   "LabelNever": "Nikoli",
   "LabelNewestAuthors": "Najnovejši avtorji",
@@ -190,6 +188,7 @@
   "LabelNotStarted": "Ni zagnano",
   "LabelNumEpisodes": "{0} epizod",
   "LabelOff": "Izključeno",
+  "LabelOn": "Vključeno",
   "LabelPassword": "Geslo",
   "LabelPath": "Pot",
   "LabelPlaybackDirect": "Neposredno",