Icons: replaced most left over filled icons by the outlined counterparts.

- only kept a few filled for basic controls (carets, play, pause,
etc...)

Commons/IconsSets/TablerIcons.qml

@@ -42,18 +42,17 @@ Singleton {
     "ethernet": "sitemap",
     "keyboard": "keyboard",
     "shutdown": "power",
-    "lock": "lock-filled",
+    "lock": "lock",
     "logout": "logout",
     "reboot": "refresh",
     "suspend": "player-pause-filled",
-    "nightlight-on": "moon-filled",
+    "nightlight-on": "moon",
     "nightlight-off": "moon-off",
     "nightlight-forced": "moon-stars",
     "bell": "bell",
     "bell-off": "bell-off",
     "keep-awake-on": "mug",
     "keep-awake-off": "mug-off",
-    "panel": "clipboard-filled",
     "disc": "disc-filled",
     "image": "photo",
     "dark-mode": "contrast-filled",
@@ -110,10 +109,10 @@ Singleton {
     "settings-about": "info-square-rounded",
     "bluetooth": "bluetooth",
     "bt-device-generic": "bluetooth",
-    "bt-device-headphones": "headphones-filled",
+    "bt-device-headphones": "headphones",
     "bt-device-mouse": "mouse-2",
     "bt-device-keyboard": "bluetooth",
-    "bt-device-phone": "device-mobile-filled",
+    "bt-device-phone": "device-mobile",
     "bt-device-watch": "device-watch",
     "bt-device-speaker": "device-speaker",
     "bt-device-tv": "device-tv",