Add mobile dark mode and user setting (#468)

* styling light and dark theme

* Icon topbar

* Fixed app bar title dark theme

* Fixed issue with getting thumbnail for things

* Refactor sharing page

* Refactor scroll thumb

* Refactor chip in auto  backup indiation button

* Refactor sharing page

* Added theme toggle

* Up version for testflight build

* Refactor backup controller page

* Refactor album selection page

* refactor album pages

* Refactor gradient color profile header

* Added theme switcher

* Register app theme correctly

* Added locale to the app

* Added translation key

* Styling for bottomsheet colors

* up server version

* Fixed font size

* Fixed overlapsed sliverappbar on photos screen

mobile/lib/modules/home/ui/disable_multi_select_button.dart

@@ -14,32 +14,22 @@ class DisableMultiSelectButton extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     return Positioned(
-      top: 0,
+      top: 10,
       left: 0,
       child: Padding(
         padding: const EdgeInsets.only(left: 16.0, top: 46),
-        child: Material(
-          elevation: 20,
-          borderRadius: BorderRadius.circular(35),
-          child: Container(
-            decoration: BoxDecoration(
-              borderRadius: BorderRadius.circular(35),
-              color: Colors.grey[100],
-            ),
-            child: Padding(
-              padding: const EdgeInsets.symmetric(horizontal: 4.0),
-              child: TextButton.icon(
-                onPressed: () {
-                  onPressed();
-                },
-                icon: const Icon(Icons.close_rounded),
-                label: Text(
-                  '$selectedItemCount',
-                  style: const TextStyle(
-                    fontWeight: FontWeight.w600,
-                    fontSize: 18,
-                  ),
-                ),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 4.0),
+          child: ElevatedButton.icon(
+            onPressed: () {
+              onPressed();
+            },
+            icon: const Icon(Icons.close_rounded),
+            label: Text(
+              '$selectedItemCount',
+              style: const TextStyle(
+                fontWeight: FontWeight.w600,
+                fontSize: 18,
               ),
             ),
           ),