implemented dynamic module settings and configurable bottom bar, added all-day event support to timetable, and overhauled marianum dates UI with month grouping and search

lib/storage/modules_settings.dart

@@ -8,10 +8,14 @@ part 'modules_settings.g.dart';
 class ModulesSettings {
   List<Modules> moduleOrder;
   List<Modules> hiddenModules;
+  bool autoFillBottomBar;
+  int fixedBottomBarSlots;
 
   ModulesSettings({
     required this.moduleOrder,
-    required this.hiddenModules
+    required this.hiddenModules,
+    this.autoFillBottomBar = true,
+    this.fixedBottomBarSlots = 3,
   });
 
   factory ModulesSettings.fromJson(Map<String, dynamic> json) => _$ModulesSettingsFromJson(json);