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/monthly_title_text.dart

@@ -22,7 +22,7 @@ class MonthlyTitleText extends StatelessWidget {
           style: TextStyle(
             fontSize: 26,
             fontWeight: FontWeight.bold,
-            color: Theme.of(context).primaryColor,
+            color: Theme.of(context).textTheme.headline1?.color,
           ),
         ),
       ),