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/view/pages/settings/data/default_settings.dart

@@ -31,10 +31,12 @@ class DefaultSettings {
           Modules.marianumDates,
         ],
         hiddenModules: [],
+        autoFillBottomBar: true,
+        fixedBottomBarSlots: 3,
       ),
       timetableSettings: TimetableSettings(
         connectDoubleLessons: true,
-        timetableNameMode: TimetableNameMode.name
+        timetableNameMode: TimetableNameMode.name,
       ),
       talkSettings: TalkSettings(
         sortFavoritesToTop: true,