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/backup/ui/backup_info_card.dart

@@ -35,7 +35,7 @@ class BackupInfoCard extends StatelessWidget {
           padding: const EdgeInsets.only(top: 8.0),
           child: Text(
             subtitle,
-            style: const TextStyle(color: Color(0xFF808080), fontSize: 12),
+            style: const TextStyle(fontSize: 12),
           ),
         ),
         trailing: Column(