Added save_data method to save the data when the app closes.
Added load_data method to load data when app opens.
Added string_to_time method to convert 'lap strings' to time data.
Inserted call to save when app closes.
Added call to load data on app init.
Moved the loading of data to end of init to stop crash
Forced time to refresh when app is reopened
Added comments. Updated appinfo file.