More notifications and move start code to another file

src/repetition_settings.rs

@@ -1,4 +1,4 @@
-use crate::AppState;
+
 use crate::data_provider::card_sets::{delete_set, update_deck};
 use crate::data_provider::card_stats::{delete_stats, load_stats_of_deck};
 use crate::lang::DeckSettings;
@@ -15,6 +15,7 @@ use iced_core::{Padding, Theme, color};
 use parking_lot::Mutex;
 use std::sync::Arc;
 use std::time::Duration;
+use crate::app::AppState;
 
 pub struct RepetitionSettingsState {
     set: DeckSettings,