Fix repetition display bug and history find bug

src/repetition_settings.rs

@@ -11,11 +11,10 @@ use iced::widget::{button, column, row, scrollable, space, text, text_input};
 use iced::{Element, Task};
 use iced_core::Length::Fill;
 use iced_core::{Padding, Theme, color};
-use std::sync::Arc;
 use parking_lot::Mutex;
+use std::sync::Arc;
 use std::time::Duration;
 
-
 pub struct RepetitionSettingsState {
     set: DeckSettings,
     index: usize,