Earpiece follow up: Change labels and icons (#3401)

* fix collapse icon on android

* update wording `earpiece` -> `headset`

* update icon `earpiece` -> `phone`

* i18n

* update icons to solid (top right) and non solid (overlay)

* update snapshots

* add config.json to gitignore

* add offset for earpice overlay

* update snapshots to include offset spacer

locales/de/app.json

@@ -175,7 +175,7 @@
       "camera_numbered": "Kamera {{n}}",
       "default": "Standard",
       "default_named": "Standard<2> ({{name}} )</2>",
-      "earpiece": "Ohrhörer",
+      "handset": "Ohrhörer",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon{{n}}",
       "speaker": "Lautsprecher",